Unable to retrieve doc from TN

Hi,
Posted Purchase order XML from TN and retrieving it using Modeler generated Services. I did the initial part of converting biz-doc to PO Doc type. Getting following error in the server log.

2004-03-11 19:21:19 GMT+05:30 [ISC.0050.0019V2] Copy failed: No source data available: to=/string, from=/resultString
2004-03-11 19:21:19 GMT+05:30 [ISC.0050.0019V2] Copy failed: No source data available: to=/binary, from=/bytes

Can any body give some clue.

Turn your debug level for logging down to either 4 or 1 and rerun. You will not see this message. It is telling you that in a map step, there is no value for linked variables.

Ray