Concurrent request in error

Hi,

While running a custom request , the request is getting completed in Error - error log as below -

+---------------------------------------------------------------------------+PGG Custom Bill of Materials: Version : 12.0.0Copyright (c) 1979, 1999, Oracle Corporation. All rights reserved.XXBOM_0195_CAL_PLANNING_PC module: CPG Calculate Planning Percentage Program+---------------------------------------------------------------------------+Current system time is 19-SEP-2013 05:49:28+---------------------------------------------------------------------------+**Starts**19-SEP-2013 05:49:29ORACLE error 20100 in FDPSTPCause: FDPSTP failed due to ORA-20100: Error: FND_FILE failure. Unable to create file, o3223085.tmp in the directory, /fa04/CPG2S/conc/temp.You will find more information in the request log.ORA-06512: at "APPS.FND_FILE", li+---------------------------------------------------------------------------+Executing request completion options...Output file size: 0Finished executing request completion options.+---------------------------------------------------------------------------+Concurrent request completedCurrent system time is 19-SEP-2013 05:49:29+---------------------------------------------------------------------------+After searching