Error when determining the inbound interface

Hi Experts,

I have a Scenario, where i am using Multi mapping Scenario in DEBMDM IDOC from ECC to Xml_File-1(DEBMAS) and Xml_File-2(ADRMAS).

When i Execute the Scenario by sending the IDOC from ECC , i am getting the below error.

Runtime error Error when determining the inbound interface: Inbound interface found several times (for same sender and receiver) for the outbound interface urn:sap-com:document:sap:idoc:messages.DEBMDM.DEBMDM06

Scenario Steps

1) No Condition in Interface Determination

2) 0..unbounded in Message Mapping and Operational Mapping.

3) E1KNA1 is mapped to E1KNA1

4) E1ADRMAS is mapped to E1ADRMAS

5) One Message Mapping and 1 Operational Mapping.

Thanks in Advance.

Sriram.