SAP Message RSAU334 - Error when changing already existing data records

Diagnosis
You have requested data of type &V2& for characteristic &V1&. An erroroccurred when changing the existing data records in table &V2&.

System Response
The system terminates the update.

Procedure
Examine the source of the data for consistency. In the monitor, deletethe locks in table &V2& for characteristic &V1&.
Data types:
M : Master data
T : Texts
Tables:
M : Master data table
T : Text table