Skip to main content
cancel
Showing results for 
Search instead for 
Did you mean: 

Calling all Data Engineers! Fabric Data Engineer (Exam DP-700) live sessions are back! Starting October 16th. Sign up.

Reply
Mauro89
Resolver II
Resolver II

User Data Function not accessible from PBI Desktop

Hi there,

 

I have created a User Data Function item in my WS. I started with adding a single function to it. That worked. Then I added a second function in the same User Data Function item. After that I can not select any of them anymore in PBI Desktop. It just shows "None" in the drop down.

Mauro89_0-1755682842113.png

The respective button shows this message when hovering over it:

Mauro89_1-1755682887093.png

 

 

Any ideas what might be the issue here?

 

Thanks and best regards!

1 ACCEPTED SOLUTION
rohit1991
Super User
Super User

Hi @Mauro89 

when one function in the User Data Function item isn’t valid, Desktop hides the whole list.

 

Could you please follow below steps:

  • In Fabric, open the UDF item >> check each function:

    • Has a Display name.

    • Only supported parameter types (Text, Whole/Decimal Number, Date/DateTime, Boolean).

    • Enabled and Saved/Published (no draft).

  • In Desktop: Update to latest >> File >> Options >> Preview features >> turn on Data functions (Fabric) >> restart.

  • On the button: pick the correct Workspace >> Function set >> then Data function.

  • Permissions: you = Contributor on the workspace and Viewer+ on the Lakehouse/Warehouse used by the functions; same tenant account.

  • Clear cache: File >> Options & settings >> Options >> Data Load >> Clear cache; sign out/in.

Quick isolate: temporarily disable/delete the new function. If the list comes back, that function’s definition is the issue.


Did it work? ✔ Give a Kudo • Mark as Solution – help others too!

View solution in original post

2 REPLIES 2
rohit1991
Super User
Super User

Hi @Mauro89 

when one function in the User Data Function item isn’t valid, Desktop hides the whole list.

 

Could you please follow below steps:

  • In Fabric, open the UDF item >> check each function:

    • Has a Display name.

    • Only supported parameter types (Text, Whole/Decimal Number, Date/DateTime, Boolean).

    • Enabled and Saved/Published (no draft).

  • In Desktop: Update to latest >> File >> Options >> Preview features >> turn on Data functions (Fabric) >> restart.

  • On the button: pick the correct Workspace >> Function set >> then Data function.

  • Permissions: you = Contributor on the workspace and Viewer+ on the Lakehouse/Warehouse used by the functions; same tenant account.

  • Clear cache: File >> Options & settings >> Options >> Data Load >> Clear cache; sign out/in.

Quick isolate: temporarily disable/delete the new function. If the list comes back, that function’s definition is the issue.


Did it work? ✔ Give a Kudo • Mark as Solution – help others too!

Hi @rohit1991,

 

I figured it out. I had a wrong datatyp defined. Also interesting that I was despite that able to publish the function without any error.
Thanks for the supportive ideas.

 

Best regards!

Helpful resources

Announcements
FabCon Global Hackathon Carousel

FabCon Global Hackathon

Join the Fabric FabCon Global Hackathon—running virtually through Nov 3. Open to all skill levels. $10,000 in prizes!

October Power BI Update Carousel

Power BI Monthly Update - October 2025

Check out the October 2025 Power BI update to learn about new features.

FabCon Atlanta 2026 carousel

FabCon Atlanta 2026

Join us at FabCon Atlanta, March 16-20, for the ultimate Fabric, Power BI, AI and SQL community-led event. Save $200 with code FABCOMM.