Getting error while taking GRN

Hi,
We are getting error while taking GRN. Please find the attached log file output below.


+---------------------------------------------------------------------------+
Purchasing: Version : 12.0.0

Copyright (c) 1979, 1999, Oracle Corporation. All rights reserved.

RCVDLPDT module: Receipt Traveller Concurrent program
+---------------------------------------------------------------------------+

Current system time is 10-APR-2013 10:01:59

+---------------------------------------------------------------------------+


+-----------------------------
| Starting concurrent program execution...
+-----------------------------

Arguments
------------
P_group_id='31541'
P_receipt_source_type='Supplier'
P_qty_precision='10'
P_org_id='103'
------------

 APPLLCSP Environment Variable set to :

 Current NLS_LANG and NLS_NUMERIC_CHARACTERS Environment Variables are :
American_America.UTF8

' '

Enter Password:
MSG-00100: Begin After Form trigger: 10-APR-13 10:02:01
MSG-00001: Wip Installation status is I