Import Standard Purchase Orders Error cannot read the file PO_PDOI_GRP.start_process

While running  "Import Standard Purchase Orders", showing below error.

Concurrent Request logs:-

Routine fdpsql cannot read the file /oracle/orafs/fs2/EBSapps/appl/po/12.0.0/sql/PO_PDOI_GRP.start_process

1)  Verify the executable method in the below PDOI concurrent programs:

    ✒Import Standard Purchase Orders.

    ✒Import Price Catalogs.

    ✒Import Contract Purchase Agreements.

     Steps:

     1. Navigate to System Administrator -> Concurrent -> Program -> Define

     2. Query for the program for example 'Import Standard Purchas Orders'.

     3. Check the Executable method defined for the program. If it is 'SQL*Plus' then select the LOV beside Executable 'POXPDOI' and  reselect the executable as'POXPDOI'.

     4. Confirm that the executable method has been changed as 'PL/SQL Procedure'.

     5. Do the same for the other programs.

2)  Check whether the attribute 'MULTI_ORG_CATEGORY' is set to 'S' in all the below concurrent programs:

    ✒Import Standard Purchase Orders.

    ✒Import Price Catalogs.

    ✒Import Contract Purchase Agreements.

     Steps:

     1. Navigate to System Administration > Concurrent > Programs

     2. Query for the Program for example 'Import Standard Purchase Orders'

     3. Click on Update pencil icon

     4. Click on Request tab

     5. For field Operating Unit Mode - The value should be 'Single'

     6. Do the same for the other programs.

3)  Test and run the program import standard purchase orders. Program will get completed successfully and should not get any error

      Ex:  'Routine fdpsql cannot read the file

           /oracle/orafs/fs2/EBSapps/appl/po/12.0.0/sql/PO_PDOI_GRP.start_process