How To Fix WP641 - Internal error: determined purchase order item does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: WP - Messages from POS interface

• Message number: 641

• Message text: Internal error: determined purchase order item does not exist

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WP641 - Internal error: determined purchase order item does not exist ?

  The SAP error message:
  WP641 Internal error: determined purchase order item does not exist
  typically occurs in the context of procurement processes, such as when creating or processing goods receipts, invoice verification, or purchase order-related transactions.
  
  Cause
  This error indicates that the system is trying to reference a purchase order (PO) item that does not exist or cannot be found in the database. Possible reasons include:
  
  The PO item number referenced in the document or transaction is incorrect or missing.
  The PO item was deleted or does not exist in the purchase order.
  Data inconsistency or corruption in the purchase order or related tables.
  The document (e.g., goods receipt or invoice) is referring to a PO item that was never created or has been changed.
  Custom enhancements or user exits incorrectly manipulate PO item data.
  The PO item is not valid for the current transaction (e.g., wrong item category).
  
  
  Solution
  To resolve the error, consider the following steps:
  
  
  Verify the Purchase Order and Item Number:
  
  Check the purchase order number and item number referenced in the transaction.
  Use transaction ME23N to display the PO and confirm the item exists.
  Ensure the item number matches exactly (including leading zeros if applicable).
  
  
  
  Check the Document Data:
  
  If the error occurs during goods receipt (MIGO) or invoice verification (MIRO), verify the PO item number entered.
  Correct the item number if it was entered incorrectly.
  
  
  
  Check for Data Consistency:
  
  Run consistency checks on the PO data.
  Use transaction SE16/SE16N to check tables like EKPO (PO items) for the PO and item number.
  If inconsistencies are found, consider correcting them or contacting your SAP Basis/Support team.
  
  
  
  Review Custom Code:
  
  If there are user exits, BADIs, or enhancements related to PO processing, review them for possible incorrect manipulation of PO item data.
  
  
  
  Recreate or Correct the Document:
  
  If the document referencing the PO item is incorrect or corrupted, consider deleting and recreating it with correct data.
  
  
  
  SAP Notes and Support:
  
  Search for SAP Notes related to message WP641 for any known bugs or patches.
  If the problem persists, raise a support ticket with SAP including detailed logs and screenshots.
  
  
  
  
  Related Information
  
  Message Class: WP6 (related to purchasing documents)
  Common Transactions Involved: MIGO (Goods Receipt), MIRO (Invoice Verification), ME21N/ME22N/ME23N (Purchase Order)
  Tables to Check:
  
  EKKO - Purchase Order Header
  EKPO - Purchase Order Items
  
  
  SAP Notes: Check SAP Service Marketplace or SAP ONE Support Launchpad for notes referencing WP641.
  Debugging: Use transaction ST22 for dumps or SM13 for update errors if applicable.
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  PO item referenced does not exist or is incorrect in the transaction/document.
  
  
  Solution
  Verify PO and item number, correct data entry, check for data inconsistencies, review custom code, and apply SAP Notes if needed.
  
  
  Related
  Transactions: ME23N, MIGO, MIRO; Tables: EKPO, EKKO; Message class: WP6
  
  
  
  
  If you provide the exact transaction and scenario where the error occurs, I can help with more specific guidance.