Problem during Message Splitting

Hi,

My requirement is to split by Senders Message..

During Mapping i have changed the occurenec of my ZRFC to 0..unbounded..

Mapping i slike

Message-> Message->

Message1-> Message1->

MT_AABAP-> Ztest1(M1->)

header(M1)-> DATA->

EMPNO(M2) EMPNO(M2)

DEPT NO(M3) EMPNO(M3)

The problem is coming is Interface Determenation(ID)

i have maitained it like

Enahanced (Type of Interface Determenation)

But the error is coming like:RCVR_DETERMINATION

NO_RECEIVER_CASE_ASYNC