Forum Discussion

New Member

1 month ago

Scheduling a User Data Functions item directly fails every time with "FunctionName is null or empty"

Hi all, I'm running into an issue with the native Schedule option on a User Data Functions item (not the Data Pipeline Functions activity, the Schedule button on the UDF item itself). Every single s...

data engineering

User Data Functions

alessanzo

New Member

1 month ago

Hi ShivekMaharaj, I've just retried the 4 steps you asked, but the error is the same. Even when manually triggering the schedule.

workspace: e2d07ad7-c21c-4aef-8909-f7bef1a3b4f1
udf id: e0a894cc-ba11-43f5-96d8-86268f05bb16
udf name: CheckUpdatesRunPipeline
schedule id: f9b23359-cee4-4419-9ff0-76ee7d1b3eb9

One of the errors from the Monitor tab run list:

{

"Error": {

"Message": "Something went wrong on our end. Wait a few minutes and try again. If the problem continues, contact your admin.",

"Code": "Unknown"

"General": {

"Function name": "--",

"Invocation ID": "--",

"Status": "Failed",

"Run kind": "Unknown",

"Owner": "Alessandro Sanzo",

"Start time": "8/25/2026, 10:41:02 AM",

"End time": "8/25/2026, 10:41:02 AM",

"Errors": "[{\"errorCode\":\"WorkloadException\",\"subErrorCode\":\"WorkloadException\",\"message\":\"Invalid Argument: FunctionName. FunctionName is null or empty. Please provide a valid value\"}]"

}

v-sathmakuri

Community Support

1 month ago

Hi alessanzo ,

Thanks for the detailed testing. Based on the results, this looks like a Fabric UDF item-level scheduling issue, not a problem with the function itself.

The key indicators are that the function works manually and through the Pipeline Functions activity, while the native schedule shows Function name = -- and fails with Function Name is null or empty.

I would suggest using the Pipeline Functions activity as the workaround for now, explicitly selecting the function and scheduling the pipeline.

I’d also suggest you to report this with Microsoft support team .

Thanks!!