Error in EDI Outbound Process

Hi

I am transforming udm Advance shipment Notification(udmAsnV1_0) to EDIX12-856(ASN), so after mapping when i am validating EDI document with service wm.b2b.edi:convertToValues error mentioned below

com.wm.app.b2b.server.ServiceException: [FFP.0018.0010] Cannot process ffData of type: com.wm.data.ISMemDataImpl.

I am new to this EDI Implementation.
I even given values for all mandatory fields required in above service.

Do we have any procedure to follow up with this issue