How To Fix WSTRN120 - You cannot remove DC &1, follow-on documents for alloc. table items exist

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 120

• Message text: You cannot remove DC &1, follow-on documents for alloc. table items exist

Self-Explanatory Message

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• What is the cause and solution for SAP error message WSTRN120 - You cannot remove DC &1, follow-on documents for alloc. table items exist ?

  SAP Error Message:
  
  WSTRN120 – "You cannot remove DC &1, follow-on documents for alloc. table items exist"
  
  Cause:
  This error occurs when you try to delete or remove a Document Change (DC) or a document that is linked to allocation table items, but there are follow-on documents (subsequent documents created from the original document) that still reference this document. SAP prevents the deletion because these follow-on documents depend on the original document for data integrity and consistency.
  In other words, the system detects that the document you want to remove is still linked to other documents (e.g., accounting documents, material documents, or other transactional documents) created as a result of the original document. Removing it would break the document flow and cause inconsistencies.
  
  Solution:
  
  
  Check for Follow-on Documents:
  
  Identify all follow-on documents linked to the document/change you want to delete.
  Use transaction codes or reports to trace document flow, for example:
  
  MB51 (Material Document List)
  FB03 (Display Document) and check document flow
  Custom reports or tables related to allocation tables
  
  
  
  
  
  Delete or Reverse Follow-on Documents First:
  
  Before deleting the original document, you must delete or reverse all follow-on documents.
  Use appropriate transactions to reverse or cancel these documents (e.g., MR8M for invoice cancellations, MBST for material document reversal).
  
  
  
  Check Allocation Table Items:
  
  Allocation tables (e.g., in settlement or cost allocation processes) may have entries linked to the document.
  Ensure these allocation entries are cleared or reversed if possible.
  
  
  
  After all follow-on documents are removed or reversed, retry deleting the original document/change.
  
  
  If deletion is not possible or allowed by business rules, consider marking the document as obsolete or blocked instead of deleting.
  
  
  
  Related Information:
  
  This error is common in modules like Materials Management (MM), Financial Accounting (FI), and Controlling (CO) where document flow integrity is critical.
  Allocation tables are often used in settlement processes (e.g., in CO-PA, internal orders, or WBS elements).
  SAP enforces document flow consistency to ensure audit trail and data integrity.
  Always consult with your functional consultant or SAP Basis team before deleting documents, as it may have legal or audit implications.
  In some cases, SAP Notes or OSS messages may provide additional guidance if this error occurs due to a system bug or specific scenario.
  
  
  Summary:
  
  Cause: Follow-on documents exist for the document/change you want to delete.
  Solution: Identify and delete/reverse all follow-on documents first, then delete the original document.
  Check: Allocation table entries and document flow.
  Note: Deletion may not always be possible; consider alternative approaches.
  
  
  If you provide the specific module or transaction where this error occurs, I can give more tailored advice.