How To Fix WSTRN121 - You cannot remove material &1, follow-on docs f. alloc. table items exist

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 121

• Message text: You cannot remove material &1, follow-on docs f. alloc. table items exist

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message WSTRN121 - You cannot remove material &1, follow-on docs f. alloc. table items exist ?

  SAP Error Message:
  
  WSTRN121 – "You cannot remove material &1, follow-on docs f. alloc. table items exist"
  
  Cause:
  This error occurs when you try to delete or remove a material from a document or transaction, but there are existing follow-on documents or allocation table entries related to that material. Essentially, the system prevents deletion because the material is still referenced in subsequent documents or allocation tables, ensuring data consistency and integrity.
  For example, in Warehouse Management (WM) or Inventory Management (IM), if a material is linked to transfer orders, delivery documents, or other follow-on documents, the system will not allow you to remove it until those references are cleared or deleted.
  
  Explanation:
  
  Material &1: The material number you are trying to remove.
  Follow-on docs for allocation table items exist: There are dependent documents or records in allocation tables that reference this material.
  
  
  Solution:
  
  
  Check Follow-on Documents:
  
  Identify all follow-on documents related to the material.
  Use transaction codes like:
  
  MB51 (Material Document List) to find related material documents.
  VL03N (Display Outbound Delivery) or LT22 (Display Transfer Order) to check for related warehouse documents.
  Custom or specific reports depending on your module.
  
  
  
  
  
  Delete or Reverse Follow-on Documents:
  
  If possible, delete or reverse the follow-on documents that reference the material.
  Ensure that business processes allow this and that it does not cause inconsistencies.
  
  
  
  Clear Allocation Table Entries:
  
  Allocation tables store references to materials in warehouse or inventory processes.
  Use appropriate transactions or programs to clear or reset these entries.
  
  
  
  Check for Open Transfer Orders or Deliveries:
  
  In WM, open transfer orders or deliveries referencing the material must be completed or deleted.
  
  
  
  Consult with Functional Team:
  
  Sometimes, the follow-on documents are critical and cannot be deleted.
  In such cases, you may need to adjust your process or consult with SAP support or your functional team for alternative solutions.
  
  
  
  
  Additional Information:
  
  This error is common in Warehouse Management (WM), Inventory Management (IM), and Logistics Execution (LE) modules.
  It is a safeguard to prevent data inconsistencies.
  Always ensure that deleting or reversing documents complies with your company’s business rules.
  If you are unsure about which documents are causing the issue, debugging or checking the allocation tables directly (e.g., via SE16/SE16N on relevant tables like LTAK, LTAP, etc.) can help.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Material cannot be removed because follow-on documents or allocation table entries exist.
  
  
  Solution
  Identify and delete/reverse follow-on documents; clear allocation table entries.
  
  
  Related T-codes
  MB51, VL03N, LT22, SE16N (for table checks)
  
  
  Module
  Warehouse Management (WM), Inventory Management (IM), Logistics Execution (LE)
  
  
  
  
  If you provide the exact transaction or scenario where this error occurs, I can help with more specific steps.