Diagnosis
You have changed the query definition.
However, the system could not lock the query on the SAP BW serveragainst changes by other users or processes. The most common reason forthis is that a lock exists already for the query, since the query isbeing edited by another user or process.

System Response
You cannot save the changed query under the same technical name. Whenyou save the query, you have to choose a new technical name.
You can still execute the changed query since this you do not have tosave it beforehand.

Procedure
Locks can remain on the SAP BW server even though a query is no longerbeing edited. Notify your system administrator so that they can removethis lock. Depending on your system settings, locks are deletedautomatically after a certain amount of time.