How To Fix WSTRN108 - Cannot display purchase document; PO has not yet been created

SAP Error Message - Details

• Message type: E = Error

• Message class: WSTRN - Message for Prepack Creation and Planning Dialog

• Message number: 108

• Message text: Cannot display purchase document; PO has not yet been created

Self-Explanatory Message

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• What is the cause and solution for SAP error message WSTRN108 - Cannot display purchase document; PO has not yet been created ?

  SAP Error Message:
  
  WSTRN108: Cannot display purchase document; PO has not yet been created
  
  Cause:
  This error occurs when you try to display or reference a Purchase Order (PO) document that does not exist in the system yet. Typically, this happens in scenarios where a process or transaction expects a PO number, but the PO has not been created or saved in the system.
  Common situations include:  
  
  Attempting to display a PO before it has been created or saved.  
  Referencing a PO number that was never created or was deleted.  
  Trying to access a PO document from a related transaction (e.g., goods receipt, invoice verification) before the PO exists.
  
  
  Solution:
  
  
  Verify PO Number:
  
  Check if the PO number you are trying to display is correct and exists in the system. Use transaction ME23N (Display Purchase Order) or ME21N (Create Purchase Order) to verify.
  
  
  Create the PO:
  
  If the PO does not exist, create it first using ME21N or the relevant transaction.
  
  
  Check Process Flow:
  
  Ensure that the business process is followed correctly. For example, if you are trying to post a goods receipt or invoice referencing a PO, make sure the PO has been created and saved before posting.
  
  
  Check for Typing Errors:
  
  Sometimes the PO number might be mistyped or incomplete. Confirm the PO number entered is accurate.
  
  
  Authorization Check:
  
  Ensure you have the necessary authorizations to display or create POs.
  
  
  
  Related Information:
  
  
  Transaction Codes:  
  
  ME21N: Create Purchase Order  
  ME23N: Display Purchase Order  
  ME22N: Change Purchase Order
  
  
  
  Common Scenario:
  
  This message often appears in procurement or invoice verification processes when the system expects a PO but none exists.
  
  
  SAP Notes:
  
  If the issue persists despite correct PO number and process, check SAP Notes or OSS for any known bugs or patches related to your SAP version.
  
  
  
  Summary:
  
  The error WSTRN108 indicates that the system cannot find the purchase order you are trying to display because it has not been created yet. Verify the PO number, create the PO if necessary, and ensure the correct process flow is followed.