How To Fix WG405 - No PO header (EKKO) found for PO &1

SAP Error Message - Details

• Message type: E = Error

• Message class: WG - Messages for store order and investment buy

• Message number: 405

• Message text: No PO header (EKKO) found for PO &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WG405 - No PO header (EKKO) found for PO &1 ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WG405 No PO header (EKKO) found for PO &1
  
  Meaning / Cause:
  This error occurs when the system tries to find the Purchase Order (PO) header data in the EKKO table for the given PO number (&1), but no corresponding entry exists. In other words, the PO number you are referencing does not exist in the PO header table (EKKO).
  Common causes include:  
  
  The PO number entered is incorrect or does not exist in the system.  
  The PO has been deleted or archived and is no longer available in the active database.  
  There is a mismatch or inconsistency in the data, such as referencing a PO number that belongs to a different company code or purchasing organization.  
  The PO number is incomplete or has leading/trailing spaces causing lookup failure.  
  The PO header data has not been created yet (e.g., trying to reference a PO before it is saved).
  
  
  Where it Occurs:
  
  During Goods Receipt (GR) posting against a PO.  
  When creating or processing an invoice referencing a PO.  
  In custom programs or user exits that try to read PO header data.  
  In workflow or approval processes involving POs.
  
  
  Solution / How to Fix:
  
  
  Verify PO Number:  
  
  Double-check the PO number entered for typos or incorrect digits.  
  Ensure the PO number exists in the system by checking transaction ME23N (Display Purchase Order).
  
  
  
  Check PO Status:  
  
  Confirm the PO is not deleted or blocked.  
  Verify the PO is released and valid for the current operation.
  
  
  
  Check Company Code and Purchasing Organization:  
  
  Make sure the PO belongs to the correct company code and purchasing org as per your transaction.
  
  
  
  Check Data Consistency:  
  
  Run a database consistency check or use standard SAP reports to verify PO data integrity.
  
  
  
  If Custom Code is Involved:  
  
  Review the logic that fetches PO header data to ensure it uses the correct PO number and keys.  
  Add error handling to manage cases where PO header is missing.
  
  
  
  Recreate or Restore PO:  
  
  If the PO was accidentally deleted, recreate it or restore from backup if possible.
  
  
  
  
  Related Tables and Transactions:
  
  EKKO: PO Header table (where the system looks for the PO header).  
  EKPO: PO Item table (contains line items for the PO).  
  ME23N: Display Purchase Order transaction.  
  ME21N: Create Purchase Order transaction.  
  MB03: Display Material Document (to check GR against PO).  
  MIRO: Enter Incoming Invoice (where PO reference is used).
  
  
  Additional Notes:
  
  This error is a standard SAP message indicating missing master data for the PO header.  
  Always ensure that the PO number is valid and active before referencing it in any transaction.  
  If the error occurs in a custom program or interface, check the data mapping and input values carefully.
  
  
  If you provide the context in which this error occurs (e.g., transaction, custom program), I can help with more specific troubleshooting steps.