cancel
Showing results for 
Search instead for 
Did you mean: 
Reply
Burak_Oezfalci
Frequent Visitor

Checking null value for CDS field

Hi all, currently I am working on a Flow which exports Accounts from Dynamics 365/Common Data Service and adds them to an external system.

 

I have created a custom string field in Dynamics 365/CDS for the Accounts Entity.

What I want to do is exporting an Account to an external system, after the export I want to update the Account Record and add the ID of that account in the external system.

 

The first steps in the flow are the following ones:

1.) When a record is selected is the trigger action for this flow.

2.) Condition which checks if the custom string field is empty/null

 

I do have problems with the second step, especially when the selected account has not been exported already and therefore has null as the value of the custom field.

In this circumstances the Flow is showing me the following error https://support.microsoft.com/en-us/help/4540228/there-is-a-problem-with-the-flow-s-trigger

If the account has been already exported, then it has a value for the custom string field and the flow is running correctly.

1 ACCEPTED SOLUTION

Accepted Solutions

Hi @Burak_Oezfalci ,

 

From the select record action which you were doing previously do select the variable value and compare it with null , no trim or length functionality is required. Just ensure that you are typing null using expression and not direct input. 

 

Thanks

View solution in original post

14 REPLIES 14
ManishJain
Solution Sage
Solution Sage

Hi @Burak_Oezfalci ,

 

Can you please share what are you using to check the empty/null value for custom field.

 

Thanks

Hi @ManishJain , i tried different approaches but none of them was successful.

 

I needed to add the step with the variable because i could not use the Flow functions like empty or length, i had no dynamic content available after selecting the function.

 

1.) Using a variable and checking if it is empty.

Burak_Oezfalci_0-1604301794298.png

 

2.) Using a variable and checking if it is null.

Burak_Oezfalci_1-1604302257175.png

 

3.) Checking directly if the custom string field is empty

I Could not post more images, if you need them just tell me.

 

When I select a record, which has not been exported and therefore has no value for the field, the Flow crashes when it starts.

When I select a record, which has already been exported and therefore has a value for the field, the Flow runs successfully.

 

 

 

Hi @Burak_Oezfalci ,

 

When the flow runs upon selecting record what value does the field shows, if not you can click on download the output to see the value . Can you please share the output. Alternatively even if you are not able to view the field value then do Get Record action , select your entity and provide the entity id from previous (select record action) . This will help you troubleshoot what is happening . Also please check if the customization that you have made is published. 

 

Thanks

abm
Super User
Super User

Hi @Burak_Oezfalci 

 

Could you try to modify the below step where you mapping the variable to use expression trim() and length(). Change the condition to greater than zero.

 

trim(length('your variable'))

 

image.png

 

Thanks



Did I answer your question? Mark my post as a solution!

If you liked my response, please consider giving it a thumbs up


Proud to be a Flownaut!

Learn more from my blog
Power Automate Video Tutorials

@ManishJain 

It seems like I found a solution, it is not nice but it is working.

 

Sorry for the german labels.

I added a new step which gets the record from Common Data Service.

 

Burak_Oezfalci_0-1604324875294.png

Although my custom field was not shown under dynamic content after entering the empty function.

I edited the value manually into the function, and it works.

Burak_Oezfalci_1-1604324970449.png

 

Still a strange behaviour, don't know why the Flow acts like that.

 

Hi @Burak_Oezfalci ,

 

Now that your functionality works can you please try doing the same with select record variable and see if it is working. 

 

 

Thanks

@abmI tried your approach but the same error occurs.

In Dynamics 365 it shows me the following error.

Burak_Oezfalci_1-1604325524969.png

Which means refresh the page or try again later.
When i scroll down, at the end it says "Invalid type. Expected String but got Null.."

 

The data for the custom field looks like this, for accounts that have not been exported the custom field has the value 'null'.

Burak_Oezfalci_0-1604325427215.png

 

I do think that the flow crashes when it tries to set up the string variable, it has null and tries to add it to the string variable

@ManishJainI am not sure if I understood you correctly ? Could you please explain in detail, what you want me to do ?

 

The Flow currently looks like this.
I am using the Common Data Service Trigger, when a record is selected.

After that I am getting the record with the get record action.

Burak_Oezfalci_0-1604325792138.png

 

Hi @Burak_Oezfalci ,

 

From the select record action which you were doing previously do select the variable value and compare it with null , no trim or length functionality is required. Just ensure that you are typing null using expression and not direct input. 

 

Thanks

@ManishJain 

I hope I understand you correctly.

This is approach is also working, I use the ID from the Select/Get record action (Datensatz abrufen) and not from the trigger action.

Burak_Oezfalci_0-1604326463959.png

 

What I don't unterstand is why the following approach is not working:

I removed the additional getRecord Action, so that the billwerkId is based on trigger.

Burak_Oezfalci_0-1604326709941.png

 

Hi @Burak_Oezfalci ,

 

Can you please add compose action to see what value you are getting in that field from select record.

 

Thanks

You mean like that ?

Burak_Oezfalci_1-1604328896355.png

 

It results in the same error behaviour.

Unfortuanelty I can't look in the run, cause no run is shown.

This is the Info I get in Dynamics 365 when I try to start the flow.

 

Burak_Oezfalci_0-1604328824989.png

 

The two options you mentioned did not work either, i will go on with the approach which has been working where i added the additional getRecord Action.

 

Thanks for your help @ManishJain.

Helpful resources

Announcements

Super User of the Month | Drew Poggemann

As part of a new monthly feature in the Community, we are excited to share that Drew Poggemann is our featured Super User for the month of February 2024. If you've been in the Community for a while, we're sure Drew's name is familiar to you, as he is one of our most active contributors--he's been a Super User for five consecutive seasons!   Since authoring his first reply 5 years ago to his 514th solution authored, Drew has helped countless Community members with his insights and expertise. In addition to being a Super User, Drew is also a User Group leader and a Microsoft MVP. His contributions to our Super User sessions and to the new SUIT program are always welcome--as well as his sense of humor and fun-loving way of sharing what he knows with others.   When Drew is not solving problems and authoring solutions, he's busy overseeing the Solution Architecture team at HBS, specializing in application architecture and business solution strategy--something he's been doing for over 30 years. We are grateful for Drew and the amazing way he has used his talent and skills to help so many others in the Community. If you are part of the SUIT program, you got to hear some great tips from Drew at the first SUIT session--and we know he still has much more to share!You can find him in the Community and on LinkedIn. Thank you for all you do, Drew!

Announcing Power Apps Copilot Cookbook Gallery

We are excited to share that the all-new Copilot Cookbook Gallery for Power Apps is now available in the Power Apps Community, full of tips and tricks on how to best use Microsoft Copilot as you develop and create in Power Apps. The new Copilot Cookbook is your go-to resource when you need inspiration--or when you're stuck--and aren't sure how to best partner with Copilot while creating apps.   Whether you're looking for the best prompts or just want to know about responsible AI use, visit Copilot Cookbook for regular updates you can rely on--while also serving up some of your greatest tips and tricks for the Community. Our team will be reviewing posts using the new "Copilot Studio" label to ensure we highlight and amplify the most relevant and recent content, so you're assured of high-quality content every time you visit. If you share a post that gets featured in the curated gallery, you'll get a PM in the Community to let you know!The curated gallery is ready for you to experience now, so visit the new Copilot Cookbook for Power Apps today: Copilot Cookbook - Power Platform Community. We can't wait to see what you "cook" up!    

Celebrating a New Season of Super Users with Charles Lamanna, CVP Microsoft Business Applications

February 8 was the kickoff to the 2024 Season One Super User program for Power Platform Communities, and we are thrilled to welcome back so many returning Super Users--as well as so many brand new Super Users who started their journey last fall. Our Community Super Users are the true heroes, answering questions, providing solutions, filtering spam, and so much more. The impact they make on the Communities each day is significant, and we wanted to do something special to welcome them at our first kickoff meeting of the year.   Charles Lamanna, Microsoft CVP of Business Applications, has stressed frequently how valuable our Community is to the growth and potential of Power Platform, and we are honored to share this message from him to our 2024 Season One Super Users--as well as anyone who might be interested in joining this elite group of Community members.     If you want to know more about Super Users, check out these posts for more information today:    Power Apps: What is A Super User? - Power Platform CommunityPower Automate: What is A Super User? - Power Platform Community Copilot Studio: What is A Super User? - Power Platform Community Power Pages: What is A Super User? - Power Platform Community

Super Users 2024 Season One is Here!

   We are excited to announce the first season of our 2024 Super Users is here! Our kickoff to the new year welcomes many returning Super Users and several new faces, and it's always exciting to see the impact these incredible individuals will have on the Community in 2024! We are so grateful for the daily difference they make in the Community already and know they will keep staying engaged and excited for all that will happen this year.   How to Spot a Super User in the Community:Have you ever written a post or asked for help in the Community and had it answered by a user with the Super User icon next to their name? It means you have found the actual, real-life superheroes of the Power Platform Community! Super Users are our heroes because of the way they consistently make a difference in the Community. Our amazing Super Users help keep the Community a safe place by flagging spam and letting the Community Managers know about issues. They also make the Community a great place to find answers, because they are often the first to offer solutions and get clarity on questions. Finally, Super Users share valuable insights on ways to keep the Community growing, engaging, and looking ahead!We are honored to reveal the new badges for this season of Super Users! Congratulations to all the new and returning Super Users!     To better answer the question "What is a Super User?" please check out this article: Power Apps: What is A Super User? - Power Platform CommunityPower Automate: What is A Super User? - Power Platform Community Copilot Studio: What is A Super User? - Power Platform Community Power Pages: What is A Super User? - Power Platform Community

Did You Attend the Microsoft Power Platform Conference in 2022 or 2023? Claim Your Badge Today!

If you were one of the thousands of people who joined us at the first #MPPC Microsoft Power Platform Conference in 2022 in Orlando--or attended the second-annual conference in Las Vegas in 2023--we are excited to honor you with a special community badge! Show your support for #MPPC Microsoft Power Platform Conference this year by claiming your badge!           Just follow this link to claim your badge for attending #MPPC in 2022 and/or 2023: MPPCBadgeRequest    Want to earn your badge for 2024? Just keep watching our News & Announcements for the latest updates on #MPPC24.

Microsoft Power Platform | 2024 Release Wave 1 Plan

Check out the latest Microsoft Power Platform release plans for 2024!   We have a whole host of exciting new features to help you be more productive, enhance delegation, run automated testing, build responsive pages, and so much more.    Click the links below to see not only our forthcoming releases, but to also try out some of the new features that have recently been released to market across:     Power Apps  Power Automate  Copilot Studio   We can’t wait to share with you all the upcoming releases that will help take your Power Platform experience to the next level!    Check out the entire Release Wave: Power Platform Complete Release Planner 

Users online (5,134)