User exit for item level in PO

Question

Hi:
Once we create a PO based on PR. I should not be able to change the net price. I need to through a ERROR MESSAGE.
The price of PR and PO Shuold be same. Used should not change the net price, If he tries to change it, A error msg should be thrown.
Please let me know the Correct User Exit for this.
Thanks
Senthil

Answer 1

Hi,
Please check sample program to find user exits available for a given transaction code.
REPORT z_find_userexit NO STANDARD PAGE HEADING.
*&  Enter the transaction code that you want to search through in order
*&  to find which Standard SAP User Exits exists.
*& Tables
TABLES : tstc,     "SAP Transaction Codes
         tadir,    "Directory of Repository Objects
         modsapt,  "SAP Enhancements - Short Texts
         modact,   "Modifications
         trdir,    "System table TRDIR
         tfdir,    "Function Module
         enlfdir,  "Additional Attributes for Function Modules
         tstct.    "Transaction Code Texts
*& Variables
DATA : jtab LIKE tadir OCCURS 0 WITH HEADER LINE.
DATA : field1(30).
DATA : v_devclass LIKE tadir-devclass.
*& Selection Screen Parameters
SELECTION-SCREEN BEGIN OF BLOCK a01 WITH FRAME TITLE text-001.
SELECTION-SCREEN SKIP.
PARAMETERS : p_tcode LIKE tstc-tcode OBLIGATORY.
SELECTION-SCREEN SKIP.
SELECTION-SCREEN END OF BLOCK a01.
*& Start of main program
START-OF-SELECTION.
Validate Transaction Code
  SELECT SINGLE * FROM tstc
    WHERE tcode EQ p_tcode.
Find Repository Objects for transaction code
  IF sy-subrc EQ 0.
    SELECT SINGLE * FROM tadir
       WHERE pgmid    = 'R3TR'
         AND object   = 'PROG'
         AND obj_name = tstc-pgmna.
    MOVE : tadir-devclass TO v_devclass.
    IF sy-subrc NE 0.
      SELECT SINGLE * FROM trdir
         WHERE name = tstc-pgmna.
      IF trdir-subc EQ 'F'.
        SELECT SINGLE * FROM tfdir
          WHERE pname = tstc-pgmna.
        SELECT SINGLE * FROM enlfdir
          WHERE funcname = tfdir-funcname.
        SELECT SINGLE * FROM tadir
          WHERE pgmid    = 'R3TR'
            AND object   = 'FUGR'
            AND obj_name = enlfdir-area.
        MOVE : tadir-devclass TO v_devclass.
      ENDIF.
    ENDIF.
Find SAP Modifactions
    SELECT * FROM tadir
      INTO TABLE jtab
      WHERE pgmid    = 'R3TR'
        AND object   = 'SMOD'
        AND devclass = v_devclass.
    SELECT SINGLE * FROM tstct
      WHERE sprsl EQ sy-langu
        AND tcode EQ p_tcode.
    FORMAT COLOR COL_POSITIVE INTENSIFIED OFF.
    WRITE:/(19) 'Transaction Code - ',
    20(20) p_tcode,
    45(50) tstct-ttext.
    SKIP.
    IF NOT jtab[] IS INITIAL.
      WRITE:/(95) sy-uline.
      FORMAT COLOR COL_HEADING INTENSIFIED ON.
      WRITE:/1 sy-vline,
      2 'Exit Name',
      21 sy-vline ,
      22 'Description',
      95 sy-vline.
      WRITE:/(95) sy-uline.
      LOOP AT jtab.
        SELECT SINGLE * FROM modsapt
        WHERE sprsl = sy-langu AND
        name = jtab-obj_name.
        FORMAT COLOR COL_NORMAL INTENSIFIED OFF.
        WRITE:/1 sy-vline,
        2 jtab-obj_name HOTSPOT ON,
        21 sy-vline ,
        22 modsapt-modtext,
        95 sy-vline.
      ENDLOOP.
      WRITE:/(95) sy-uline.
      DESCRIBE TABLE jtab.
      SKIP.
      FORMAT COLOR COL_TOTAL INTENSIFIED ON.
      WRITE:/ 'No of Exits:' , sy-tfill.
    ELSE.
      FORMAT COLOR COL_NEGATIVE INTENSIFIED ON.
      WRITE:/(95) 'No User Exit exists'.
    ENDIF.
  ELSE.
    FORMAT COLOR COL_NEGATIVE INTENSIFIED ON.
    WRITE:/(95) 'Transaction Code Does Not Exist'.
  ENDIF.
Take the user to SMOD for the Exit that was selected.
AT LINE-SELECTION.
  GET CURSOR FIELD field1.
  CHECK field1(4) EQ 'JTAB'.
  SET PARAMETER ID 'MON' FIELD sy-lisel+1(10).
  CALL TRANSACTION 'SMOD' AND SKIP FIRST SCREEN.
or
Enhancement
MEVME001 WE default quantity calc. and over/ underdelivery tolerance
MM06E001 User exits for EDI inbound and outbound purchasing documents
MM06E003 Number range and document number
MM06E004 Control import data screens in purchase order
MM06E005 Customer fields in purchasing document
MM06E007 Change document for requisitions upon conversion into PO
MM06E008 Monitoring of contr. target value in case of release orders
MM06E009 Relevant texts for "Texts exist" indicator
MM06E010 Field selection for vendor address
MM06E011 Activate PReq Block
MMAL0001 ALE source list distribution: Outbound processing
MMAL0002 ALE source list distribution: Inbound processing
MMAL0003 ALE purcasing info record distribution: Outbound processing
MMAL0004 ALE purchasing info record distribution: Inbound processing
MMDA0001 Default delivery addresses
MMFAB001 User exit for generation of release order
MRFLB001 Control Items for Contract Release Order
AMPL0001 User subscreen for additional data on AMPL
LMEDR001 Enhancements to print program
LMELA002 Adopt batch no. from shipping notification when posting a GR
LMELA010 Inbound shipping notification: Transfer item data from IDOC
LMEQR001 User exit for source determination
LMEXF001 Conditions in Purchasing Documents Without Invoice Receipt
LWSUS001 Customer-Specific Source Determination in Retail
M06B0001 Role determination for purchase requisition release
M06B0002 Changes to comm. structure for purchase requisition release
M06B0003 Number range and document number
MEQUERY1 Enhancement to Document Overview ME21N/ME51N
MELAB001 Gen. forecast delivery schedules: Transfer schedule implem.
MEFLD004 Determine earliest delivery date f. check w. GR (only PO)
MEETA001 Define schedule line type (backlog, immed. req., preview)
ME590001 Grouping of requsitions for PO split in ME59
M06E0005 Role determination for release of purchasing documents
M06E0004 Changes to communication structure for release purch. doc.
M06B0005 Changes to comm. structure for overall release of requisn.
M06B0004 Number range and document number
Business Add-in
ME_PROCESS_REQ_CUST Enhancements for Processing Enjoy PReqs: Customer
ME_PROCESS_REQ Enhancements for Processing Enjoy PReqs: Internal
ME_PROCESS_PO_CUST Enhancements for Processing Enjoy Purchase Order: Customer
ME_PROCESS_PO Enhancements for Processing Enjoy Purchase Order: Intern.
ME_PROCESS_COMP Processing of Component Default Data at Time of GR: Custome
ME_PO_SC_SRV BAdI: Service Tab Page for Subcontracting
ME_PO_PRICING_CUST Enhancements to Price Determination: Customer
ME_PO_PRICING Enhancements to Price Determination: Internal
ME_INFOREC_SEND Capture/Send Purchase Info Record Changes - Internal Use
ME_HOLD_PO Hold Enjoy Purchase Orders: Activation/Deactivation
ME_GUI_PO_CUST Customer's Own Screens in Enjoy Purchase Order
ME_FIELDSTATUS_STOCK FM Account Assignment Behavior for Stock PR/PO
ME_DP_CLEARING Clearing (Offsetting) of Down Payments and Payment Requests
ME_PURCHDOC_POSTED Purchasing Document Posted
SMOD_MRFLB001 Control Items for Contract Release Order
EXTENSION_US_TAXES Extended Tax Calculation with Additional Data
ARC_MM_EKKO_WRITE BAdI: Enhancement of Scope of Archiving (MM_EKKO)
ARC_MM_EKKO_CHECK BAdI: Enhancement of Archivability Check (MM_EKKO)
MM_EDI_DESADV_IN Supplementation of Delivery Interface from Purchase Order
MM_DELIVERY_ADDR_SAP Determination of Delivery Address
ME_WRF_STD_DNG PO Controlling Reminder: Extension to Standard Reminder
ME_TRIGGER_ATP Triggers New ATP for Changes in EKKO, EKPO, EKPV
ME_TRF_RULE_CUST_OFF BADI for Deactivation of Field T161V-REVFE
ME_TAX_FROM_ADDRESS Tax jurisdiction code taken from address
ME_REQ_POSTED Purchase Requisition Posted
ME_REQ_OI_EXT Commitment Update in the Case of External Requisitions
ME_RELEASE_CREATE BAdI: Release Creation for Sched.Agrmts with Release Docu.
ME_DEFINE_CALCTYPE Control of Pricing Type: Additional Fields
ME_CHANGE_OUTTAB Enrich ALV Output Table in Purchasing
ME_CHANGE_CHARACTER Customer-Specific Characteristics for Product Allocation
ME_CCP_DEL_DURATION Calc. of Delivery Duration in CCP Process (Not in Standard)
ME_CCP_BESWK_AUTH_CH BAdI for authorization checks for procuring plant
ME_CCP_ACTIVE_CHECK BAdI to check whether CCP process is active
ME_BSART_DET Change document type for automatically generated POs
ME_BAPI_PR_CREATE_02
ME_BAPI_PR_CREATE_01
ME_BAPI_PO_CREATE_02
ME_BAPI_PO_CREATE_01
ME_BADI_DISPLAY_DOC BAdI for Internal Control of Transaction to be Invoked
ME_ACTV_CANCEL_PO BAdI for Activating the Cancel Function at Header Level
MEGUI_LAYOUT BAdI for Enjoy Purchasing GUI
ME_CHECK_ALL_ITEMS Run Through Items Again in the Event of Changes in EKKO
ME_COMMTMNT_REQ_RE_C Check of Commitment Relevance of Purchase Requisitions
ME_COMMTMNT_REQ_RELE Check of Commitment Relevance of Purchase Requisitions
ME_COMMTMNT_PO_REL_C Check for Commitment-Relevance of Purchase Orders
ME_COMMTMNT_PO_RELEV Check for Commitment-Relevance of Purchase Orders
ME_COMMITMENT_STO_CH BadI for checking if commitments for STOs are active
ME_COMMITMENT_RETURN Commitment for return item
ME_CIP_REF_CHAR Enables Reference Characteristics in Purchasing
ME_CIP_ALLOW_CHANGE Configuration in Purchasing: Changeability Control
ME_CIN_MM06EFKO Copy PO data for use by Country version India
ME_CIN_LEINRF2V BADI for LEINRF03 excise_invoice_details
ME_CIN_LEINRF2R BADI for CIN India - Delivery charges
ME_CHECK_SOURCES Additional Checks in Source Determination/Checking
ME_CHECK_OA Check BAdI for Contracts
Reward if helpful.
Regards,
Harini.S