CALL_FUNCTION_CANT_SET_USERKEY is an ABAP runtime error which you may come across when using or developing within an SAP system. See below for the standard details explaining what it means and how you can avoid or fix this runtime error.
Short Dump Classification: I - Internal Kernel Error
You can view further information about a runtme error by using transaction code ST22 which will show you this and all runtime erros that have happen in your SAP system.
Also check out the Comments section below to view or add related contributions and example screen shots.
Internal error.
Task handler user key is not available during RFC
Please see internal error for more details about the possible cause of this runtime error and how it could be avoided.
Internal error of the task handler.
Please see internal error for more details about the possible cause of this runtime error and how it could be avoided.
CALL_FUNCTION_CANT_SET_USERKEY - call function cant set userkey CALL_FUNCTION_CANNOT_REGISTER - call function cannot register CALL_FUNCTION_BLOB_TYPE - call function blob type CALL_FUNCTION_BLOB_NO_MEMORY - call function blob no memory CALL_FUNCTION_BLOB_CLASS - call function blob class CALL_FUNCTION_BACK_REJECTED - call function back rejected