No unique table assignment. No time stamp

What causes this issue?

If this BC Set has been rrepeatedly activated, the activation
information cannot be assigned uniquely to an activation because the
activation time was not recorded.

System Response

All data for this activation is displayed.

How to fix this error?

Reactivate the BC Set if necessary.

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.