SAP Message 5A498 - &2 &4 is locked by &1

Diagnosis
The object &V2& &V4& (ID &V3&) is already being processed by user &V1&,so you cannot make any changes at the moment.

System Response
The system does not allow changes to this object.

Procedure
Please wait until user &V1& releases the object.

Procedure for System Administration
If the object was locked by accident, it can be unlocked manually inthe usual way. The relevant table is PLOGI.