No worklist ID was passed

What causes this issue?

The system did not transfer a worklist ID to the selection report for
worklist generation.

System Response

Processing was stopped.

How to fix this error?

Possible causes of the error:
The selection report is not correctly included in a flow definition of
the workflow.
The worklist ID is not maintained in the selection screen.
There is a program error.

Error message extract from SAP system. Copyright SAP SE.