How To Fix W#159 - Delivery date & in purchase order & cannot be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: W# -

• Message number: 159

• Message text: Delivery date & in purchase order & cannot be changed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message W#159 - Delivery date & in purchase order & cannot be changed ?

  The SAP error message W#159, which states "Delivery date & in purchase order & cannot be changed," typically occurs when there are restrictions on modifying the delivery date in a purchase order (PO). This can happen for several reasons, and understanding the cause is essential for finding a solution.
  Causes:
  
  
  Status of the Purchase Order: The purchase order may be in a status that does not allow changes. For example, if the PO has been fully delivered or invoiced, changes to the delivery date may be restricted.
  
  
  Document Type Restrictions: Certain document types in SAP may have specific rules that prevent changes to certain fields, including delivery dates.
  
  
  Release Strategy: If the purchase order is subject to a release strategy, it may be locked for changes until it is released.
  
  
  Material Management Settings: Configuration settings in the Material Management (MM) module may restrict changes to delivery dates based on specific criteria.
  
  
  Open Purchase Order Items: If there are open items or pending goods receipts against the purchase order, the system may prevent changes to the delivery date.
  
  
  Solutions:
  
  
  Check PO Status: Verify the status of the purchase order. If it is fully delivered or invoiced, you may need to create a new purchase order or adjust the existing one through a different process.
  
  
  Review Document Type: Check the configuration of the document type used for the purchase order. If it has restrictions, you may need to consult with your SAP administrator to understand the limitations.
  
  
  Release Strategy: If the PO is under a release strategy, ensure that it is released before attempting to make changes. You may need to contact the person responsible for the release.
  
  
  Adjust Open Items: If there are open items, consider closing them or adjusting the related documents before attempting to change the delivery date.
  
  
  Consult Configuration Settings: If you have access to the configuration settings, review the relevant settings in the MM module to see if there are any restrictions that can be modified.
  
  
  Use Transaction Codes: You can use transaction codes like ME22N (Change Purchase Order) to attempt to change the delivery date, but ensure that you have the necessary permissions and that the PO is in a state that allows changes.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific notes related to this error message. SAP frequently updates its knowledge base with solutions for common issues.
  User Permissions: Ensure that you have the necessary permissions to make changes to purchase orders in your SAP environment.
  Training and Documentation: Review any internal documentation or training materials related to purchase order management in your organization, as they may provide additional context or procedures to follow.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in the MM module for further assistance.