SAP Message R1856 - Error When Updating Table &1 &2 &3 &4

Diagnosis
An internal error occurred during an attempt to change data records inthe database.

System Response
Processing cannot be continued.

Procedure
Contact SAP to clarify whether the problem can only be resolved by aprogram correction, or by changes to the parameters.
Provide the name of table &V1& in which the error occurred, as well asother parameters - if given in the message - referring to a key thatmay not exist.