Import Standard Purchase Order Program or Import Price Catalog Failed in Oracle APPS

Below solution is from Oracle Support Doc ID 1632117.1

Caution: Before doing any changes please validate it from Oracle Support.

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 Purchase 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
             /u16/oracle/XX/apps/apps_st/appl/po/12.0.0/sql/PO_PDOI_GRP.start_process