Test mode variant &1 doesn't exist for deletion program &2

What causes this issue?

You entered test mode variant &V1&, which doesn?t exist, in the settings
for postprocessing program &V2&.

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?

Create variant &V1& or enter an existing test mode variant.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.