BC Set data read error

What causes this issue?

You tried to activate or simulate the activation of BC Sets. Problems
occurred when reading BC Set data from database tables.

System Response

The procedure is cancelled.

How to fix this error?

See the activation log for further information about the problem.

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.