Index data for alternative clients

What causes this issue?

The system checks index data that is to be deleted, created, or changed.
The system has established that there are data records that do not match
the current client.

System Response

The system cancels the action. No further checks are performed.

How to fix this error?

Correct the input data.

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.