SAP Message C$727 - Cannot assign application parameter && to a symbol

Diagnosis
The system could not allocate an application parameter to a symbol.
The system was unable to allocate a symbol to the parameter youspecified for object &V1& and attribute &V2&. No symbol has beenallocated to the object and attribute.

System Response
The system ignores the application parameter during the generation run.

Procedure
Check whether appropriate symbols have been generated for allapplication parameters. Should this not be the case, start a symbolgeneration run. Subsequently, restart report generation.