How To Fix WSTRN122 - You cannot change delvry phases, follow-on docs f. alloc. table it. exist

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 122

• Message text: You cannot change delvry phases, follow-on docs f. alloc. table it. exist

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• What is the cause and solution for SAP error message WSTRN122 - You cannot change delvry phases, follow-on docs f. alloc. table it. exist ?

  SAP Error Message:
  
  WSTRN122 – "You cannot change delivery phases, follow-on docs f. alloc. table it. exist"
  
  Cause:
  This error occurs when you attempt to change the delivery phases or follow-on documents in a sales document or delivery, but there are already allocation table entries (e.g., schedule lines, delivery items, or follow-on documents) linked to the document. Essentially, the system prevents changes to delivery phases or follow-on documents because these changes would conflict with existing allocations or references.
  In other words, the system enforces data consistency by not allowing modifications that would invalidate or contradict existing delivery or allocation data.
  
  Explanation in Context:
  
  Delivery phases refer to the planned partial deliveries or schedule lines in a sales order.
  Follow-on documents are documents created from the sales order, such as deliveries, billing documents, or reservations.
  The allocation table keeps track of the relationship between sales order items, schedule lines, and follow-on documents.
  
  If follow-on documents or allocations exist, changing delivery phases or follow-on document references could cause inconsistencies, so SAP blocks such changes.
  
  Solution:
  
  
  Check for existing follow-on documents or allocations:
  
  Verify if there are any deliveries, billing documents, or other follow-on documents created for the sales order or delivery.
  Use transaction codes like VA03 (Display Sales Order), VL03N (Display Delivery), or VF03 (Display Billing Document) to check related documents.
  
  
  
  Delete or reverse follow-on documents if appropriate:
  
  If changes to delivery phases or follow-on documents are necessary, you may need to delete or reverse the follow-on documents first.
  For example, cancel or delete deliveries or billing documents linked to the sales order.
  
  
  
  Adjust the sales order or delivery after clearing follow-on documents:
  
  Once follow-on documents are removed, you can change the delivery phases or follow-on document references as needed.
  
  
  
  Consult with business process owners:
  
  Since deleting or reversing documents can have business implications, coordinate with relevant stakeholders before making changes.
  
  
  
  Technical check (if applicable):
  
  Sometimes, inconsistencies in the allocation tables can cause this error. A technical consultant or SAP support may need to check the database tables (e.g., VBEP, VBFA) for inconsistencies.
  Use SAP standard reports or tools to analyze document flow and allocations.
  
  
  
  
  Related Information:
  
  
  Tables involved:
  
  VBEP – Schedule lines for sales order items.
  VBFA – Document flow (links between sales documents and follow-on documents).
  VBAK/VBAP – Sales document header/item data.
  
  
  
  Common transactions:
  
  VA02 – Change Sales Order
  VL02N – Change Delivery
  VF11 – Cancel Billing Document
  
  
  
  SAP Notes and KBAs:
  
  Search SAP Support Portal for WSTRN122 for any specific notes or patches.
  Sometimes, this error can be related to custom enhancements or user exits that restrict changes.
  
  
  
  
  Summary:
  
  Cause: Attempt to change delivery phases or follow-on documents when allocation entries or follow-on documents already exist.
  Solution: Remove or reverse existing follow-on documents or allocations before making changes.
  Check: Document flow and allocation tables to ensure consistency.
  
  
  If you provide the exact transaction or scenario where this error occurs, I can help with more tailored advice.