How to print PO file attachments on the PO report (R12)

function CF_ATTACHFormula return Char is
V_ATTACH Varchar2(32000);
V_LONG_TXT LONG(32000);
begin
  SELECT DLT.LONG_TEXT INTO V_LONG_TXT
  /*AD.SEQ_NUM                  ,
  DCT.USER_NAME               ,
  DAT.USER_NAME               ,
  AD.ATTACHED_DOCUMENT_ID     ,
  DET.USER_ENTITY_NAME        ,
  DAT.NAME                    ,
  D.DOCUMENT_ID               ,
  AD.ENTITY_NAME              ,
  AD.PK1_VALUE                ,
  D.MEDIA_ID                  ,
  D.URL                       ,
  DT.TITLE                    ,
  DLT.LONG_TEXT */
FROM FND_DOCUMENT_DATATYPES DAT,
  FND_DOCUMENT_ENTITIES_TL DET    ,
  FND_DOCUMENTS_TL DT             ,
  FND_DOCUMENTS D                 ,
  FND_DOCUMENT_CATEGORIES_TL DCT  ,
  FND_ATTACHED_DOCUMENTS AD       ,
  FND_DOCUMENTS_LONG_TEXT DLT    ,
  PO_HEADERS_ALL    PHA
WHERE D.DOCUMENT_ID       = AD.DOCUMENT_ID
AND DT.DOCUMENT_ID        = D.DOCUMENT_ID
AND DCT.CATEGORY_ID       = D.CATEGORY_ID
AND D.DATATYPE_ID         = DAT.DATATYPE_ID
AND AD.ENTITY_NAME        = DET.DATA_OBJECT_CODE
AND DLT.MEDIA_ID          = D.MEDIA_ID
AND DAT.NAME              = 'LONG_TEXT'
AND ENTITY_NAME = 'PO_HEADERS'
AND AD.PK1_VALUE  = PHA.PO_HEADER_ID
AND PHA.SEGMENT1 = :PO_ORDER;

DECLARE
   f_line       VARCHAR2 (32000);
   f            UTL_FILE.file_type;
   f_dir        VARCHAR2 (250);
   fname        VARCHAR2 (50);
   Comma1       VARCHAR (10);
   Comma2       VARCHAR (10);
   Comma3       VARCHAR (10);
   Comma4       VARCHAR (10);
   Comma5       VARCHAR (10);
 
BEGIN
   f_dir := '/usr/tmp';
   fname := 'TEST.txt';
   f := UTL_FILE.fopen (f_dir, fname, 'r');

 
   LOOP
      BEGIN
        
          UTL_FILE.get_line (f, f_line);
        EXCEPTION
         WHEN NO_DATA_FOUND
         THEN
            EXIT;
      END;

    
   V_ATTACH := V_ATTACH || CHR(10) ||f_line;
   
   SRW.MESSAGE(10001, V_LONG_TXT);

   ---   DBMS_OUTPUT.put_line(  f_line );

     
   END LOOP;

   UTL_FILE.fclose (f);
   COMMIT;
  
   Return V_ATTACH;
  
END;
end;

Workflow :- Hiding Workflow Buttons

1. Identify the .wft file that contains the definition of the process for which the email notification needs to be changed.

2. Connect to database using the Workflow Builder.

3. Open the .wft file in Oracle Workflow Builder.

4. Go to (M) Help > About Oracle Workflow Builder

5. Change Access level to 0 and check 'Allow modifications to customization'.

6. Expand the node of the item that needs to be changed, then under it, expand the  Messages node.

7. Right-click on the message that is currently sent to the users, and needs to be changed.

8. Define the attribute #WFM_OPEN_MAIL (Template for email with response).

9. Set its Default value to WFMAIL:OPEN_MAIL_OUTLOOK.

10. Click on Apply and save the change, and retest with a new WF process.