SAP Message >0286 - Formal error: False call for returns posting

Diagnosis
Program error in an application program that creates returns documents.The parameters I_WAERS were not entered or had a blank valuewhen calling up the function module FKK_REFUSAL_POST orFKK_REFUSAL_POST_MASS.
These parameters are required if the processing mode is set toI_RL_MODUS = 3.

System Response
Error message

Procedure
INCLUDE NA_SYSADMIN1 OBJECT DOKU ID TX

Procedure for System Administration
INCLUDE FICA_NA_OSS OBJECT DOKU ID TX