How To Fix VW231 - All dlvs in shipment & posted for GI, but some were already posted for GI

SAP Error Message - Details

• Message type: E = Error

• Message class: VW - Shipment Processing Output

• Message number: 231

• Message text: All dlvs in shipment & posted for GI, but some were already posted for GI

Goods issue has been posted for all deliveries for which goods issue
could be posted. However, there are some deliveries for which goods
issue has already been posted or which were not relevant for goods
issue.
In this case, the system issues an error message.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message VW231 - All dlvs in shipment & posted for GI, but some were already posted for GI ?

  The SAP error message VW231 indicates that there is a discrepancy in the goods issue (GI) postings for deliveries associated with a shipment. Specifically, it means that all deliveries in the shipment have been posted for goods issue, but some of those deliveries were already posted for goods issue previously. This situation can arise in various scenarios, such as when trying to process a shipment that includes deliveries that have already been processed.
  Cause:
  
  Duplicate Goods Issue Posting: The most common cause of this error is that the goods issue for some deliveries has already been executed, and the system is trying to post it again.
  Incorrect Shipment Processing: The shipment may have been incorrectly processed, or there may be inconsistencies in the delivery status.
  Manual Changes: Manual changes to the delivery or shipment documents that do not align with the system's expected state can lead to this error.
  System Configuration Issues: There may be configuration issues in the shipment or delivery processing settings.
  
  Solution:
  
  Check Delivery Status: Verify the status of each delivery in the shipment. You can do this by checking the delivery documents to see which ones have already been posted for goods issue.
  Avoid Duplicate Posting: Ensure that you are not trying to post the goods issue for deliveries that have already been processed. If a delivery has already been posted, you should not attempt to post it again.
  Review Shipment Processing: If the shipment was processed incorrectly, you may need to reverse the goods issue for the affected deliveries and then reprocess the shipment correctly.
  Use Transaction Codes: Utilize transaction codes like VL02N (Change Delivery) or VL03N (Display Delivery) to check the details of the deliveries and their statuses.
  Consult with SAP Support: If the issue persists and you cannot identify the cause, it may be beneficial to consult with SAP support or your internal SAP team for further investigation.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as VL01N (Create Outbound Delivery), VL02N (Change Outbound Delivery), and VL03N (Display Outbound Delivery).
  Documentation: Review SAP documentation related to shipment processing and goods issue postings to understand the expected workflow and any potential pitfalls.
  User Exits and BAdIs: If custom developments are in place, check for any user exits or BAdIs that might affect the delivery and shipment processing logic.
  System Logs: Check system logs for any additional error messages or warnings that could provide more context about the issue.
  
  By following these steps, you should be able to identify the root cause of the VW231 error and take appropriate action to resolve it.