Submit request "PRC: Interface Invoices to Receivables" error

hi all,

     When I submited the request "PRC: Interface Invoices to Receivables" , the error occured.

     log file:

    

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Projects: Version : 11.5.0

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

PATTAR module: PRC: Interface Invoices to Receivables
+---------------------------------------------------------------------------+

Current system time is 21-AUG-2012 15:04:31

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

Using default of 500 projects per set because profile
 PA_NUM_PROJECTS_PER_SET is not defined
Defaulting key segment because profile PA_SELECTIVE_FLEX_SEG is not defined
This concurrent request is not being rescheduled
 
Validated parameters are as follows:
  Parameter 1 - Transfer Mode    = 'REGULAR'
  Parameter 2 - Project Number          = 'All       '
  Parameter 3 - Start Project Number    =