3583860 - IDOC_ERROR_PARSE_FAILURE: IDoctype " " within the EDI_DC40 control record segment does not match IDOC ROOT XML

- Using IDoc extension for sending data to SAP from SAP PIPO. But while sending message an error like below is thrown in IDOC_AAE receiver channel:

"com.sap.conn.idoc.IDocParseException: (7) IDOC_ERROR_PARSE_FAILURE: IDoc type " " within the EDI_DC40 control record segment does not match the IDoc-XML root tag " ":
state=READING_ENDTAG, charPosition=XXX, lineNumber=XX, columnNumber=XX"

-Also, after extension you observe that the IDoc which you are importing has change root tag from that of original IDoc due to which root xml doesn't match with IDoc type within control records.
-Trying to post IDoc using the original IDoc (without extension) IDocs are successfully posted to SAP backend.

SAP NetWeaver 7.5
SAP Process Integration 
SAP Process Orchestration

Override IDoc Control Headers, MESTYP, IDOCTYP, CIMTYP, IDoc_AAE. , KBA , BC-XI-CON-IDO , Idoc Adapter J2EE , Problem