SAP Message R1853 - SYST: Error in Function &1 &2 &3 &4

Diagnosis
An internal error occurred.

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 routine &V1& in which the error occurred, as wellas other parameters - if given in the message - referring to a key thatmay not exist.