The application log is already active (internal error)

What causes this issue?

The application log is already active. Repeat activation is not
possible.

System Response

Processing is terminated.

How to fix this error?

As a rule, this is due to an internal program error.
The external code of the application log already active is &V1&, user
&V2&, report/program &V3&.

Procedure for System Administrators

Please contact SAP.
Function module &V4& was called several times, which is not allowed.

Error message extract from SAP system. Copyright SAP SE.