SAP Message 6D371 - Error when determining new IMKEY number &1

Diagnosis
The system tried to determine a new IMKEY number. A number wasselected that was already used on the database.

System Response
The process of determining a new IMKEY number was terminated.
There is an inconsistency in the number range object. The current numberis a value that was already assigned.

Procedure
Change the current number to a value that was not yet used in thesystem.
To change the current number, use transactionFO_NRIV_IMKNT.
To determine the correct current IMKEY number, you can use thereport RFVI_IMKEY_ANALYZE.