Hi jaiganesh
Please could you share the status of GR document is it in transfer or Posted in backend ?
Also can you check the inbound IDOC has reached ECC or not and the outbound IDOC as left SRm or not ?
Next you should also run the reports BBP_GET_STATUS_2 and CLEAN_REQ_REQ_UP
You may also refer the link
http://scn.sap.com/thread/3373194
Let me know if this helps?
Regards
Vinita