5101 271 EB03 Mapping fails wm.b2b.edi:convertToString service.

I am building a 5010 Version of 271 Response, and when an EB03 element is present in the document, the wm.b2b.edi:convertToString service fails with the error: com.wm.app.b2b.server.ServiceException: java.lang.NullPointerException

It works fine, if EB03 element is not mapped/present in the document.

Not sure, what its complaining as the error does not says whats missing.

Any help is appreciated, as I have a very crunch deadline…