SAP Message KI501 - The records are already being processed by &

Diagnosis
You want to process data records which are being worked on by userV1. to prevent overwriting the other user's changes (or vice versa),the SAP System does not allow simultaneous processing of data records.

Procedure
Wait until user &V1& has finished processing the data records.
Or, contact user &V1& .

644364KP06ff.: Message KI501 with same activity type
643483KP26: KI501 for the same activity type
87448KP97: User locks him- or herself
112659KP97/98: User locks him- or herself
940407KP 26: Message KI 501 with same activity type