SAP Message WI303 - Error reading distribution list &

Diagnosis
The function module SO_DLI_READ_API1 terminated with anexception. The return code was &V2&.

Procedure
Return code,,Technical name,,Meaning
1,,DLI_NOT_EXIST,,Problem in the binding from the task to the rule. Thesystem cannot interpret the input parameters (name of distributionlist).
2,,OPERATION_NO_AUTHORIZATION,,The current user (you or the userWF-BATCH) does not have read authorization for the folder in which thedistribution list is stored.
3,,PARAMETER_ERROR,,Internal error
4,,X_ERROR,,Internal error
INCLUDE NA_WF-ADMINISTRATOR OBJECT DOKU ID TX