Idoc_error_parse_failure Java IDoc_AAE in PI 7.31 SP11

Hi Experts,

Currently I am working on File to IDoc_AAE scenario in PI 7.31 SP11 NW731EXT_16_REL and Earlier I used to use standard IDoc SHP_OBDLV_CREATE_SLS01 and it used to transfer IDoc to ECC with out any issue after mapping the control record with constant values accordingly but now  I am using custom IDoc Z IDoc type ZSD_PGI01 and the receiver IDoc_AAE adapter is functioning in error and the message failed with error as below:

MP: exception caught with cause com.sap.aii.af.idoc.exception.IDOCAdapterException: Error before sending due to idoc parsing error: (7) IDOC_ERROR_PARSE_FAILURE: An IDocIllegalTypeException occurred while parsing IDoc-XML for type <ZSD_PGI01>:
state=READING_SEGMENT_STARTTAG, charPosition=339, lineNumber=1, columnNumber=340 .

And when I checked the 339th char position which is SHIP_POINT field with XSD type as string as defined in IDoc structure.Please help me on this.

Thanks,

Nithin.