tRFC for work item &1 is still in SM58 queue

What causes this issue?

The work item with the ID '&V1&' has the status 'READY'. Processing of
the work item was started with a tRFC. This tRFC has the following
properties:
Key: &V3&
Status Text: &V2&
Status: &V4&
Processing of the work item has not yet been started.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Analyze the status text and take appropriate measures, for example lock
users. Afterwards, start the tRFC entry or reset the status. If you
delete the entry from the tRFC queue, a new entry is created by using
the Workflow system job SWWERRE.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.