Error when reading the generated program &1 / &2

What causes this issue?

Error when reading the generated program in program &v1& with the action
&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?

Activate the DataStore object and restart data activation.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.