Tag: errors

Error in Customer Insights – Data

Not a long blog post, but something that may come in handy for some people!

I was recently playing around with Customer Insights – both the Data & Journeys side of thing for a Proof of Concept I was creating for a customer. It’s definitively interesting to see how Microsoft have been evolving the product over the last year or so (which was the last time I played around with it).

One of the components that we were very interested to play around with specifically is the ‘Discovery’ part of Customer Insights – Data. As shown in the screenshot below, this is where you’re able to use natural language to query your data, to then get results using AI. This means that you don’t have to understand any specific query language (SQL, R, M etc), but rather just ‘converse’ with it as you would another person.

You’ll perhaps note that there’s NO mention of Copilot here, though perhaps Microsoft may at some point decide to call this Copilot functionality as well?

The team had loaded in the data – we had a fair few number of rows (multiple millions of them!), gone through the unification process, enrichment process, etc etc. All of this was set up & working properly.

However, when I tried to go to the ‘Discovery’ tab in my own browser, I was getting an extremely strange error:

As you can see, it’s incredibly informative…NOT!!! I mean, what does ‘Value cannot be null. (Parameter ‘key’)’ actually mean to the average person?

At first, I thought it was something to do with the underlying data, so went back to check that. However the data seemed fine. Furthermore, other people on the team were able to access Discovery in their own browsers without any issues.

Having no other option (turning it off & on again didn’t work), I raised a support ticket with Microsoft. This was responded to in a timely fashion, and I found myself working with Rohan, the Microsoft Support Representative.

In my initial ticket submission, I had included details of what was going on, what I had clicked on, that others in the team didn’t have the problem, the Organisation ID, URL’s – you name it!

Rohan jumped on a call with me, and it turned out to be the shortest support session I have EVER had. He asked me to change the system language to another language (I had been using English, to decided to change it to German). Once the language change had been applied, we navigated back to the ‘Discovery’ tab (all in German, I may add), and when the screen loaded, there was no error! Holding our breath, we then changed the language back to English (more complicated than I had imagined, with navigating in a different language).

Once this was done, and everything was back in familiar English, the ‘Discovery’ tab then loaded without issues (again!), and I was able to go ahead and start running queries in it using natural language. It was great!

In fact, it’s actually taken me longer to type out the above than the length of the support call – it was indeed that quick! Obviously lots of praise to Rohan (he did mention he had seen this once before, which is why he knew how to fix the issue).

The bigger question in my mind is what exactly was happening/going wrong underneath – I have asked this to Microsoft, but haven’t gotten a response. My guess is that something in the user/language settings hadn’t been populated properly, and therefore resulted in that error message. Updating/changing this forced it to then populate properly, and it worked.

Have you ever seen something like this, where changing a system setting (such as language) helped resolve an issue? I’d love to hear more about it –

Active or inactive, that is the question?!?!

Catchy title, right? Well I was wondering what exactly I should use for this blog post, and as you’ll see as we go through things, this is probably quite a good paraphrase to use.

So, where to start? Well, with a customer, of course! Now, this customer has been running live with a custom Dynamics 365 solution for a little while. Importantly for this story, there have not been ANY releases in quite a few months. This is of course good to bear in mind, given that we can all, um, occasionally find that a release could cause an issue, somewhere, sometimes…

Part of the capabilities that they’re using is bringing in Leads, and qualifying them appropriately. As part of this process, there are various custom attributes (aka columns) that have been added to the Lead table, along with corresponding columns added to the Contact table. There’s also some custom logic that, when a lead is qualified, copies the values from Lead to Contact record, updating it (essentially extending the standard capabilities of the system).

This has all been working well to date, and the customer team has been very happy with their system. Until it stopped working, last week. Which was strange, as nothing seemed to have changed at all?

When trying to qualify leads in the system, they were getting the following error message:

Cryptic, right? This seemed a little more interesting as well, given that when only inputting basic information into a Lead record (eg First Name, Last Name, Phone Number), it didn’t matter how many leads existed with the same information, it qualified without a problem.

However, using any custom columns that had been added to the table caused this error to occur.

The first thing that I did was to check that there had been no updates released to Production. This was confirmed as being the case. I then also checked that there had been no OTHER solutions released to Production (as this could have impacted on it). Thankfully there hadn’t – the system looked to be in as fine a shape as it’s been running for a while.

OK – on to the next step. What updates have been released by Microsoft? Well, with the fact that we were able to pinpoint the date that the functionality had stopped working, we went to find the corresponding Learn article about the release (Update 22102 – Release Notes | Microsoft Learn). Don’t worry about clicking through to read it – there’s essentially not much in it, and there’s nothing at all around the Lead table or its functionality!

Continuing to dig around, I really wasn’t sure of what was causing this, but obviously had to work it out & figure out a fix! It was quite a dilemna.

This is where the amazing Microsoft community came into play. I noticed a post by Jeroen Scheper on one of the channels that I’m on. It turns out that he was having the same issues, so we started to try collaborate on it. This both reassured me (that it wasn’t just me), but also increased the confusion, as we couldn’t work out what was going on underneath to cause this!

Raising with Microsoft (we both actually raised support incidents), I had an amazing support call almost immediately. Demonstrating the problem, I was told that it was due to Duplicate Detection rules.

Now I’ll admit that this confused me somewhat. See, I had already checked the Duplicate Detection rules, but nothing had been changed, and no new rules had been implemented.

Getting the support agent to walk me through things, they told me that I had to unpublish the rules, modify a setting on them, and then re-publish the rules. This was the setting (on each one) that had to be updated:

This again caused me to be confused. Why was the system having issues with inactive records? Surely qualified leads are active records, but just qualified (& then being locked down as a result)?

Well, it turns out that my perspective of how this works is actually incorrect. As we (hopefully) all know, whilst all records have a Status value (eg Active, Inactive), there are some records that also have a Status Reason value.

In fact, the ‘State Code’ choice value in Dataverse is restricted (we can’t access it), and seems to have some quite interesting functionality running behind it. Depending on which table is accessed, there are different options available within it.

For example, the Lead table shows:

Whereas the Contact table shows:

And the Task table shows:

Anyhow – it turns out that when a Lead record is qualified or disqualified, though it’s not shown in the user interface (nor behind the scenes), the record is actually being deactivated!

More information on this can be found at Qualify and convert leads to opportunity | Microsoft Learn.

So, this was the underlying reason behind the error message. Obviously Microsoft had updated something, which then caused this to fail. I don’t know how many different customers may have been (or still be?) experiencing the issue, but I think that the error message at least could be a little clearer? Perhaps including a link to the relevant Microsoft documentation page, for a start.

Well, thankfully this was put to bed, and I was quite thankful (as was the customer). And this is how I decided to come up with the title of this blog post!

Have you ever had something similar happen to you? Drop a comment below – I’d love to hear!

Managed Solutions, & replacing a field

Well to start with, I’m sure that I’m going to get pulled up by some people for my use of the word ‘field’ in the title. After all, officially it’s now a ‘column’! But I (still) can’t let go of calling them as I’ve done so for over a decade, so field it is.

Now to the actual topic of this blog post, which is centred around Managed Solutions. Leaving aside the whole debate about whether we should be using managed or unmanaged solutions (& when/where to do each), there is one definitive benefit of using a managed solution.

See, unmanaged solutions are additive in nature. Work is done in the development environment, then deployed. Further work is done (additional items added, etc), and deployed, and they then appear in the downstream environments. However, if you delete an item in the development environment, it’s not removed when the solution is deployed downstream.

Managed solutions, on the other hand, are both additive & detractive. As with unmanaged solutions, items added in the development environment are also added downstream when deployed. However, if an item is removed from the solution in the development environment, it will also be removed when the solution is deployed downstream. It’s one of the useful ways to ensure that you don’t end up with random unused items just lying around in Production (which have a habit then of popping up in the Advanced Find window, for example). So it’s really quite handy for a lot of reasons to go down this route.

Well, I found myself going down this route recently, but with slightly unexpected results, I’ll freely admit…

The scenario was that we had deployed a managed solution to the UAT (test) environment on a client project. Then the client changed their mind (shock & horror!!) as to a specific item, and we needed to change it from a text item to a lookup item. Obviously (as per best practise, of course) this would need to be done in the development environment, and then released downstream. Given that this is a managed solution, I’d expect this to work, without any issues. Well, it didn’t…

The change in the development environment (deleted the old item, ‘re-created’ it as a lookup with the same system name) was done, we exported it as managed, and then went to import it in the UAT environment. It took the solution file, thought about it for a while (it’s somewhat of a large solution), & then errored:

Exception type: System.ServiceModel.FaultException`1[Microsoft.Xrm.Sdk.OrganizationServiceFault] Message: Attribute mdm_field is a String, but a Lookup type was specified.

Now I was somewhat confused by this message occurring. It’s not been the first time I’ve seen it over the years, but in my previous experience I’ve seen it when handling unmanaged solutions. It’s when you delete an item in the development environment, re-create it as a different item type (with the same underlying system name), and then deploy it as unmanaged. The solution import in the second environment fails due to the different in the type (as it sees the same name). This, of course, is to be expected.

But here we’ve been using managed solutions for deployment, and as mentioned above, they’re detractive as well. The expected behaviour (at least from my side of things) would be that the system would note that the item type has changed, remove the old item, & import the new item. In my mind, that’s logical, but apparently not?

See, even managed solutions have their limitations, of which this is one of them. Having checked with several other people who I reached out to around this, I’ve discovered that it can’t work in the way that I was expecting it to. Instead, a specific process has to be followed

  1. In the development environment, remove the item, & export the solution as managed
  2. In the downstream environment(s), deploy this (interim) managed solution. This will remove the item from the environments
  3. In the development environment, re-create the item with the different system type. Then export it as managed
  4. In the downstream environments, deploy this solution. This will then add the item (with the new system type) into the environment.

This means that development & deployment teams (if separate ones) need to co-ordinate around this, to ensure it’s done in the right way. It could also be developed/exported in succession, and then imported in succession as well (either manually, or through an Azure DevOps Pipeline, for example).

This worked wonderfully for us, and to be honest, I was quite relieved after several hours of frustration with things. Even better, it was a Friday, so meant that the week could end well!

Have you ever come across this, and been frustrated as well? Have you got a similar story with something else that happened to you around solutions? Drop a comment below – I’d love to hear!

‘Ghost’ lookup value following deployment

This is something that stumped me fairly recently. It’s also something that I was trying to work out what I should use at the title for this post! Let me share what happened.

I’m working on a project that’s quite critical (COVID-19 related). This is a project that we’ve built something around Dynamics 365 as an additional wrapper, to provide specific functionality for the pandemic. It’s being rolled out (the same solution) to multiple clients, and is only using the functionality from Power Platform. No custom code at all.

Now, before going into the specifics around it, let’s take a moment to revisit what a lookup field is, and what it does. Essentially a lookup field connects two tables together (wow – that felt strange not to use the word ‘entity’!). In the front interface, it’s used for a 1:N relationship.

So for example, we can have a lookup from Account to Contact, to set the primary contact for the account. The user navigates to the field, searches for the record they’re wanting to associate, and saves it.

Underneath, there’s a relationship that’s automatically created between the two tables, showing the way that the relationship will go (ie 1:N or N:1). This is created on both sides (more on that another time around dependencies), and most people will never need to modify it

When I first started with this particular project, I got the solution, and deployed it into the Dev environment (for the project that I was on). On testing it out, I found something very interesting. We’re using the Case (Incident) table, and there are various lookup fields on it. One of these was already populated with a value. Hmm – that’s interesting, I thought. It was a new deployment, and we hadn’t set any static data up yet at all. So how could it already be populated?

How is this being set, when I’ve not entered it into the system as a record…

Furthermore, I was unable to save the Case record. When I tried to, I was getting an interesting error:

On drilling down into the error log (which admittedly is actually getting better in the details shown in it, thankfully!), it turned out to be because I didn’t have access to the referenced record (in the lookup field). It just didn’t exist.

So the lookup field value was coming in with a hard-coded GUID (record identifier). But how was this being done, especially if there weren’t any records (of that type) in the system at all?

From my experience of things, I could think of two ways in which to populate a lookup field with a hard-coded value:

  • Through a ‘real-time’ Power Automate flow, on create of the record. It’s possible to set a GUID value in the flow, and then it would be set
  • Through custom code, running on the form. Again, it’s possible to hard-code a GUID there, and then set the field

However on checking both options, none of them were happening. No Power Automate flows touching the Case record, and no custom code at all on the Case.

It was then, digging through the other parts of the solution, that I saw various Business Rules. For those unfamiliar with these, I’ll quote from the official Microsoft documentation around them:

By combining conditions and actions, you can do any of the following with business rules:

  • Set column values
  • Clear column values
  • Set column requirement levels
  • Show or hide columns
  • Enable or disable columns
  • Validate data and show error messages
  • Create business recommendations based on business intelligence.

I’ve used Business Rules (somewhat extensively) before. However on going into the one for the Case table, I found that something was happening that I wasn’t aware could happen! It’s actually possible to set a lookup field value through it:

I spy a lookup option

Even though we’ve deployed the solution from the original development environment to a different environment, this is still set. But there are no records that are available:

I had never thought that it would be possible – to set a static value (eg a number, or some text), fine. But to set referential data? Wow.

Obviously this can be quite helpful. The bit that it’s NOT helpful though is when deploying the solution to another environment (as this situation was). It doesn’t help if you re-create the record that it’s referring to with using the same record name, as it’s using the underlying GUID (which you can’t re-create). This really does take solution deployment into a whole new perspective, where you need to be careful around these sorts of things as well.

So something new that I’ve learned (I do try to learn something new each day), and specifically around an area I thought I knew quite well. It did take some time, but I’m glad that I (finally) found the root cause of it, and identified what was causing it.

Have you ever had something like this happen, where you’re searching & searching for the cause of it? Drop a line below – I’d love to hear!

Omnichannel Agent Presence Not Loading

Recently, with some of the system updates that have come out for Omnichannel, there’s been an interesting issue observed. This is essentially when the Agent Presence (which signifies the available of the agent) doesn’t load within the system.

This is of course a problem. Without agents able to set their status, it’s not possible to have conversation sessions come through to them. As a result, they’re not able to do their work!

It’s an interesting issue, and one that I’ve discussed with several other people who are deeply involved with Omnichannel for Customer Service. We’re not quite sure why it’s happening, but there seems to be some different things going on.

It can range from either the presence icon not showing up at all, to it showing up, but not being able to be selected/changed.

As there are already some stellar resources out there around this, I therefore would like to link to these, rather than just repeat information!

The first thing to try is the fix that Tricia Sinclair suggests at Omni Channel Engagement Hub: Fix Missing Presence Icon – Everything D365 (triciasinclair.com). Here Tricia points out how to use the new App Profile Manager to put a fix in. There’s even a really helpful video that she’s done to walk us through the steps!

The second thing to try is the fix that Victor Sanchez suggests at Omnichannel Error in Wave 2 | Victor Sanchez (victorsolaya.com). This involves changing the URL for the Channel Provider

Have you come across this issue, and not been able to solve it? Drop a comment below, and I’ll do my best to try to help out!

Marketing & an unusual error

I’ll be the first to admit that I have limited experience of Dynamics 365 for Marketing. In fact, I think that it would be stretching the description to say that I have even ‘limited experience’! I’ve seen it one or twice, and have attended a few presentations on it, but apart from that, nada.

I do remember what it used to be like in its previous incarnation, but even then I didn’t really touch it. Customer Service (& Sales) are my forte, and I generally stick within those walls. Marketing traditionally was its own individual application, and only more recently has been rolled into the wider Dynamics 365 application suite. Even so, it still sometimes works in a somewhat interesting way, different from the rest of the system.

Inevitably I’ve had to actually do something with it for a client project, which has brought me to putting up this post. We had created a few marketing forms, surfaced them correctly, etc. It was great, and working well.

Then we realised that we needed to capture some additional information, in this case a list of Countries. There’s no standard entity for it within Dynamics 365, so we created our own, and loaded a list of countries (& associated data) into it. Fine – that was working without issues, including in the places that we needed to surface it.

Then we came to needing to surface the Country value on a marketing form, through a lookup. Simple, you’d have though? Well, not so much. We went to create the field, and got presented with the following error as we did so:

The error says: ‘The role marketing services user does not have access to the entities you’ve chosen…’

In essence, the system was telling us that we weren’t able to access the entity. Though Country is a custom entity, we were logged in as users with the System Administrator role (which has access automatically to ALL entities). This left us puzzling around what to do.

The error message, thankfully, was quite clear. It was referring to a specific security role missing privileges. In this case, it was the ‘Marketing Services User’. I therefore went to check the permissions for it, and sure enough, it didn’t have permissions on the Country entity that I had created!

Now usually if a security role is missing permissions, what we do is create a custom security role (usually copying the existing role), and add the permissions to do. Best practise is NOT to edit the default security roles. The (main) reason behind this is that Microsoft could update the security role in a later update/release, which could impact on us. We therefore use custom roles to avoid this happening (& yes, I’ve seen it happen/impact in practise!).

The fly in the soup here (lovely phrase, I know) is that we couldn’t do that here. It seems that Dynamics 365 for Marketing uses an underlying security role that’s needed. Even if we had implemented a custom role, we didn’t have any idea of how to tell the system to actually use our custom role, rather than the default one that it’s currently using. Quite frustrating, I tell you!

So in the end we decided to give the default security role the necessary permissions, and see what happened:

With having granted the security permissions to the role, & saved it, we then attempted to create the marketing form field field. This time, we were successful! No errors occurred during it, thankfully:

So in summary, I still have no idea why this has happened. I’ve taken a look around, but can’t find anything obvious as to how/why it actually works like this. I guess that I’d need to dig ‘under the hood’ somewhat to see what’s actually going on, and how to dealt with it appropriately. For the moment, the solution is in place, and is working.

We’ve also been very careful (as mentioned above) to add just the specific custom entity to the default security role. We haven’t touched anything else within it – all other security permissions are done (as per best practise) with custom security roles, which are then allocated appropriately to users &/or teams. Hopefully this will be fine in the long-term, though we’ll definitely be keeping our eyes on it to make sure!

Have you ever come across something like this? How did you decide to go about solving it? Drop a comment below – I’d love to hear!

Update: Thanks to the amazing Carl Cookson, it turns out that this is due to an update from Microsoft in how Marketing works. See https://docs.microsoft.com/en-gb/dynamics365/marketing/marketing-fields for more information around it. Essentially it uses this role to sync to the Azure staged Marketing service, so this role needs to have the appropriate permission

Lookup fields & Power Automate

This is an interesting post, for several reasons. Firstly, it’s the first one in 3 weeks – I was off on holiday, and decided to take an (almost) absolute break from all things digital, which included this blog. It was actually quite refreshing, though now coming back & starting to write again does seem a bit daunting, I’ll admit!

Thankfully, whilst wondering what exactly to start with, a scenario came up that I was working on. It seemed quite simple at first, but then actually got someone complicated. I therefore thought it would be helpful to others if I wrote about it, so here it is.

The scenario was as follows. We had records being auto-created in the system, and needed to create child records for them. This, as I’m sure you’ll agree, is really quite simple to do with Power Automate. We also needed to set lookup values on the child record, that were already populated on the parent record (for reference purposes).

So for example, the parent record has a lookup to Country (being a separate entity), and the child record also has a lookup to Country. These need to be the same.

Being both lookup fields, I figured that I’d be able to take the value from the parent record, and simply plop it into the corresponding field on the child record in Power Automate:

So I did that – and immediately hit an error. Not just any error, but the fabled ‘Resource not found for the segment’ error!

Obviously, I did what anyone would do at first – I put it into Google & Twitter, and took a look at what came up.

The ‘problem’ was coming from using the ‘CDS Current Environment’ connector, which is the latest version available (the old one is no longer available to use). It’s really great for a lot of things, but unfortunately not so great in a few areas. See, in the old CDS Connector, you could just drop the lookup field value into the field you were wanting to populate. Power Automate had no issues with that, & it would run just fine.

However in the ‘new’ CDS Connector, you can’t just do that. Instead, you need to use an OData reference (which I haven’t done much of before, to tell the truth). So based on the blogs I had come across, I went to work to try to get this working.

Part of the challenge was that there didn’t seem to be a unified consensus in how to do it. I came across the following variations:

  • /entityname(Lookup Field Value)
  • /entityname/(Lookup Field Value)
  • /pluralentityname(Lookup Field Value)
  • /pluralentityname/(Lookup Field Value)

Somewhat confusing, as I’m sure you’d agree. Nevertheless, I ploughed through all of the different possibilities. But nothing was working – every single time, I still got the ‘segment not found’ error message. This, as you can image, was extremely frustrating!

Thankfully, one of my good friends was around & able to help out. Namely, Tricia Sinclair came to the rescue!

We took a look at the code I was using, and she took a look at some of her own use cases (where it had worked for her). I was starting to think down the path of needing a capital letter in the entity name (some systems can be REALLY finicky around things like that), but thankfully it wasn’t.

Instead, it was the following. See, this was a custom entity. It turns out that for a custom entity (& heck, for all I know system entities as well) the syntax needed is ‘publisherprefix_pluralentityname(lookupfieldvalue)’. Now that’s not something that I had come across ANYWHERE at all!

Looking at it, I guess it makes sense. After all it would technically be possible to have multiple entities with the same name, though with different publishers. As a result, the system needs to know WHICH exact entity is being needed for the Power Automate, so uses this. Somewhat complicated (and hey – it worked without all of this in the OLD CDS Connector), but we got it to work!

Testing it out, everything worked smoothly. The Power Automates fired off without any issues, the data got created & populated, and everyone was happy.

So there you go. Another interesting little twist in syntax needed, which hopefully will NOT change in the (near) future!

Have you come across anything like this? I’d love to hear – drop a comment below around it!

Canvas Apps, Patch command, & Business Rules

Recently I’ve been doing a LOT of work with canvas apps. As I think I’ve mentioned before (at least once or twice!) my background is the traditional ‘model’ style app. As a result, it’s been quite a steep curve to skill up, but I think I’m handling it alright. I’m (slowly) getting used to the way that canvas apps work, the ability to put different controls on the screens, and reference each other.

Heck, I’m even starting to play with more advanced navigation concepts, based on some REALLY great ideas that I’ve seen (Clarissa, I can’t say how grateful I am to you for all of your assistance & guidance!).

Gradient Adventure

Amongst all of this incredible & wonderous journey, I’ve also been learning some code. Yup – you heard me correctly! I’ve always said that I’m not a developer – I respect them greatly, but I don’t develop code.

True, I’ve picked up some SQL here & there, and will freely admit that running SQL queries against the Dynamics 365 database is SO much more powerful than running an Advanced Find. Of course, it’s necessary to know the joins, conditions & such. Redgate’s SQL Helper has been amazing along the way. With moving to cloud systems, things got a little more….complicated. XrmToolBox has the SQL4CDS tool which I’ve used several times, but I was really excited by the recent announcement/release of being able to (properly) run SQL commands against the CDS database from SQL Management Studio….

Anyhow, I’m digressing. So, I’ve been needing to learn canvas app style code. It’s like Excel commands, though (slightly) different at times. Things don’t always make sense (to me, at least) – I STILL haven’t figured out why some expressions need to be in a certain order. After all, according to mathematical principles it doesn’t matter if you write A>B, or B<A. Going to still need to wrap my mind around all of this.

Simplifying Algebraic Expressions - Math 7 Quiz - Quizizz

So, one of the commands that I’m using quite frequently is the Patch command. If you’re really interested, you can check this out in detail at https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/functions/function-patch.

In short, Patch allows you to set record values from places other than a form table to the data that you’re saving. It also allows you to save field values that aren’t available on the canvas form table (due to limitations). I’ve referred to this previously at https://thecrm.ninja/canvas-app-record-set-regarding-field/. The scenario that I talk about there is just one of the things that can be done in this way. Since that post, we’ve come a long way, and are doing most things with Patch statements (due to the scenario requirements).

So that’s all well & good. However, there IS actually a reason for me writing this blog post….crazy, right? And it’s not to waffle on and on about patch statements. It’s about a very specific scenario that we hadn’t come across to date, but that came up last week.

Now, obviously you’re now VERY interested in hearing all about it, and learning for your own situations. I mean, otherwise you wouldn’t have stuck with me through this article for so long. So, let me set out what happened.

As mentioned above, we’re mostly using patch statements throughout this specific app. That’s….quite a lot of patch statements (especially as we also have IF statements governing which one is being used, as it’s not possible to use IF inside a patch statement, but I’m digress…). I’d say we’re pretty familiar with this now.

However, even with being familiar with it, we suddenly had a problem. One of the forms that we’re saving down started to NOT save down. Records weren’t being saved, which obviously is a problem!

Bear in mind here that we hadn’t touched the code for this specific action for a few weeks. Nothing had changed in our code, and nothing had changed from a platform perspective (ie Microsoft hadn’t changed any of the underlying functionality.

Going into the statement, we immediately started testing it out, and saw something interesting. We were getting an error that a required field could not be NULL:

This was quite puzzling – although in a model app we can set fields as required, and users can’t save the record until they populate it, this isn’t true in a canvas app (well, when using Patch, at least). See, it’s technically possible to use a Patch statement to create/update a record, but you don’t have to pass in required field (values). It’s a sort of workaround (& can be used in some scenarios for benefit, actually). So this happening all of a sudden was quite strange to us.

It was even stranger as we hadn’t been using the field on the form at all. The field that was being referred to was being used for a totally different process, in a different team, & not surfaced into the canvas app at all. This really was causing us to scratch our heads, and try to think (more) out of the box. It didn’t seem to be the code (we could set a value in code, but didn’t want to as it wasn’t relevant), yet we weren’t able to ignore it. Really frustrating!

With all of this in mind, I decided to go back to absolute basics after a few hours of troubleshooting. The field that seemed to be causing all of these issues was a relatively new addition, so I checked all of the details around it:

  • Was the field type correct for what it should be? Yes
  • Was it set as required on the CDS field definition? No (not that I thought this would help, but still checked)
  • Was the field on the entity form? Yes
  • Was the field set as required on the entity form? No (again, I didn’t think I’d get any joy from this)
    • Hold on….on the form designer it’s not set as Required. But when I open the form, and put some values in, suddenly it IS required.

Aha! OK – I’m now starting to see some light shining on this. I headed over to Business Rules to check out what might be there. Lo & behold, there was a business rule that set the field as required (when certain conditions were filled). An example of this would be:

Now this field hadn’t been in place when the code was developed (as mentioned above) – it had come in since. I was very curious if a Business Rule could require canvas apps to set the value, and so did some testing.

Disabling the business rule removed the error from the patch statement. Re-enabling it caused the issue again. OK – so we’ve found what’s been causing this, and could put in an adequate solution to handle it.

So in short, if you’re setting a field as being required through a Business Rule, you’re going to need to address it in any canvas app as well (that’s saving data down to the same form that it’s appearing on). Why it actually happens, when just setting it as Required on the form doesn’t, I have NO idea.

But it’s a good concept to keep in the back of your mind, I believe. Especially if there are multiple people working on developing a single entity, as otherwise you could find yourself in exactly the same scenario that we did!

Have you come across anything like this, or a different piece of strange behaviour? Comment below – I’d love to hear about i!