Test mode variant &1 has a productive indicator

What causes this issue?

The production indicator has been selected for test mode variant &V1&,
which is entered in the settings for the delete program.

System Response

Although you thought test mode was running, the data was actually
deleted from the database.

How to fix this error?

Correct text mode variant &V1& (select the test mode indicator) or enter
a correctly maintained test mode variant.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.