User Exit/BADI for Purchase Order and Purchase Requisitions

Question

HI,
I have a requireent where i have to check the the user does not enter both Subitems and Over a Limit for a Service Purchase Requisition.
Is there a User Exit or Badi that i can use where this information is availaible.
also i have to check that release strategy is assigned to every purchase order where the version has been completed.
Is there a User Exit or Badi where Information of EREV table is availaible.
Regards,
Tarun Bahal

Answer 1

For Purchachase requisition , the BADIs and USER EXITS are
ME_COMMITMNT_PARKING BAdI for Redefining Commitment Interface When Parking
ME_MEREQ_PARKING BAdI Purchase Requisition: "Hold"
ME_REQ_HEADER_TEXT Copy Header Text: Enjoy Purchase Requisition
try with the above BADI's
MEREQ001 Customers' Own Data in Purchase Requisition
for Purchase order , the BADIs and USER EXITS are
ARC_MM_EKKO_CHECK BAdI: Enhancement of Archivability Check (MM_EKKO)
ARC_MM_EKKO_WRITE BAdI: Enhancement of Scope of Archiving (MM_EKKO)
EXTENSION_US_TAXES Extended Tax Calculation with Additional Data
MEGUI_LAYOUT BAdI for Enjoy Purchasing GUI
ME_ACTV_CANCEL_PO BAdI for Activating the Cancel Function at Header Level
ME_BADI_DISPLAY_DOC BAdI for Internal Control of Transaction to be Invoked
ME_BAPI_PO_CREATE_01
ME_BAPI_PO_CREATE_02
ME_BAPI_PR_CREATE_01
ME_BAPI_PR_CREATE_02
ME_BSART_DET Change document type for automatically generated POs
ME_CCP_ACTIVE_CHECK BAdI to check whether CCP process is active
ME_CCP_BESWK_AUTH_CH BAdI for authorization checks for procuring plant
ME_CCP_DEL_DURATION Calc. of Delivery Duration in CCP Process (Not in Standard)
ME_CHANGE_CHARACTER Customer-Specific Characteristics for Product Allocation
ME_CHANGE_OUTTAB Enrich ALV Output Table in Purchasing
ME_CHECK_ALL_ITEMS Run Through Items Again in the Event of Changes in EKKO
ME_CHECK_OA Check BAdI for Contracts
ME_CHECK_SOURCES Additional Checks in Source Determination/Checking
ME_CIN_LEINRF2R BADI for CIN India - Delivery charges
ME_CIN_LEINRF2V BADI for LEINRF03 excise_invoice_details
ME_CIN_MM06EFKO Copy PO data for use by Country version India
ME_CIP_ALLOW_CHANGE Configuration in Purchasing: Changeability Control
ME_CIP_REF_CHAR Enables Reference Characteristics in Purchasing
ME_COMMITMENT_RETURN Commitment for return item
ME_COMMITMENT_STO_CH BadI for checking if commitments for STOs are active
ME_COMMTMNT_PO_RELEV Check for Commitment-Relevance of Purchase Orders
ME_COMMTMNT_PO_REL_C Check for Commitment-Relevance of Purchase Orders
ME_COMMTMNT_REQ_RELE Check of Commitment Relevance of Purchase Requisitions
ME_COMMTMNT_REQ_RE_C Check of Commitment Relevance of Purchase Requisitions
ME_DEFINE_CALCTYPE Control of Pricing Type: Additional Fields
ME_DP_CLEARING Clearing (Offsetting) of Down Payments and Payment Requests
ME_FIELDSTATUS_STOCK FM Account Assignment Behavior for Stock PR/PO
ME_GUI_PO_CUST Customer's Own Screens in Enjoy Purchase Order
ME_HOLD_PO Hold Enjoy Purchase Orders: Activation/Deactivation
ME_INFOREC_SEND Capture/Send Purchase Info Record Changes - Internal Use
ME_PO_PRICING Enhancements to Price Determination: Internal
ME_PO_PRICING_CUST Enhancements to Price Determination: Customer
ME_PO_SC_SRV BAdI: Service Tab Page for Subcontracting
ME_PROCESS_COMP Processing of Component Default Data at Time of GR: Customer
ME_PROCESS_PO Enhancements for Processing Enjoy Purchase Order: Intern.
ME_PROCESS_PO_CUST Enhancements for Processing Enjoy Purchase Order: Customer
ME_PROCESS_REQ Enhancements for Processing Enjoy PReqs: Internal
ME_PROCESS_REQ_CUST Enhancements for Processing Enjoy PReqs: Customer
ME_PURCHDOC_POSTED Purchasing Document Posted
ME_RELEASE_CREATE BAdI: Release Creation for Sched.Agrmts with Release Docu.
ME_REQ_OI_EXT Commitment Update in the Case of External Requisitions
ME_REQ_POSTED Purchase Requisition Posted
ME_TAX_FROM_ADDRESS Tax jurisdiction code taken from address
ME_TRF_RULE_CUST_OFF BADI for Deactivation of Field T161V-REVFE
ME_TRIGGER_ATP Triggers New ATP for Changes in EKKO, EKPO, EKPV
ME_WRF_STD_DNG PO Controlling Reminder: Extension to Standard Reminder
MM_DELIVERY_ADDR_SAP Determination of Delivery Address
MM_EDI_DESADV_IN Supplementation of Delivery Interface from Purchase Order
SMOD_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
LMELA010  Inbound shipping notification: Transfer item data from 
LMEQR001  User exit for source determination                     
LMEXF001  Conditions in Purchasing Documents Without Invoice Rece
LWSUS001  Customer-Specific Source Determination in Retail       
M06B0001  Role determination for purchase requisition release    
M06B0002  Changes to comm. structure for purchase requisition rel
M06B0003  Number range and document number                       
M06B0004  Number range and document number                       
M06B0005  Changes to comm. structure for overall release of requi
M06E0004  Changes to communication structure for release purch. d
M06E0005  Role determination for release of purchasing documents 
ME590001  Grouping of requsitions for PO split in ME59           
MEETA001  Define schedule line type (backlog, immed. req., previe
MEFLD004  Determine earliest delivery date f. check w. GR (only P
MELAB001  Gen. forecast delivery schedules: Transfer schedule imp
MEQUERY1  Enhancement to Document Overview ME21N/ME51N           
MEVME001  WE default quantity calc. and over/ underdelivery toler
MM06E001  User exits for EDI inbound and outbound purchasing docu
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 P
MM06E008  Monitoring of contr. target value in case of release or
MM06E009  Relevant texts for "Texts exist" indicator             
MM06E010  Field selection for vendor address                     
MMAL0001  ALE source list distribution: Outbound processing      
MMAL0002  ALE source list distribution: Inbound processing       
MMAL0003  ALE purcasing info record distribution: Outbound proces
MMAL0004  ALE purchasing info record distribution: Inbound proces
MMDA0001  Default delivery addresses                             
MMFAB001  User exit for generation of release order              
MRFLB001
Regards,
Anirban