Advance your Data & AI career with 50 days of live learning, dataviz contests, hands-on challenges, study groups & certifications and more!
Get registeredGet Fabric Certified for FREE during Fabric Data Days. Don't miss your chance! Request now
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.
The respective button shows this message when hovering over it:
Any ideas what might be the issue here?
Thanks and best regards!
Solved! Go to Solution.
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.
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.
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!
Check out the November 2025 Power BI update to learn about new features.
Advance your Data & AI career with 50 days of live learning, contests, hands-on challenges, study groups & certifications and more!
| User | Count |
|---|---|
| 98 | |
| 72 | |
| 50 | |
| 48 | |
| 42 |