How To Fix AQ321 - This line must not be deleted

SAP Error Message - Details

• Message type: E = Error

• Message class: AQ - Message texts for SAP Query

• Message number: 321

• Message text: This line must not be deleted

What causes this issue?

You attempted to delete a header line containing the title from a
statistic or ranked list, but you are not allowed to delete the title.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AQ321 - This line must not be deleted ?

  The SAP error message AQ321 ("This line must not be deleted") typically occurs when you attempt to delete a line item in a document or transaction that is not allowed to be removed. This can happen in various contexts, such as during the processing of purchase orders, sales orders, or other documents where certain lines are mandatory or have dependencies.
  Causes:
  
  Mandatory Fields: The line item you are trying to delete may contain mandatory fields that are required for the document to be valid.
  Dependencies: The line item may be linked to other items or processes that prevent its deletion.
  Document Status: The document may be in a status that does not allow modifications, such as being locked for processing or already completed.
  Custom Logic: Custom validations or enhancements in the SAP system may enforce rules that prevent the deletion of certain line items.
  
  Solutions:
  
  Check Document Status: Ensure that the document is in a status that allows modifications. If it is locked or completed, you may need to change its status or create a new document.
  Review Mandatory Fields: Verify if the line item has mandatory fields that need to be filled out or if it is required for the document's integrity.
  Consult with Your Team: If there are custom validations in place, consult with your SAP functional team or ABAP developers to understand the specific rules that apply to the document.
  Use Alternative Actions: If deletion is not possible, consider whether you can achieve your goal through other means, such as changing the quantity to zero or marking the item as inactive, if applicable.
  Error Logs: Check the error logs or messages for additional context that may help identify why the line cannot be deleted.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Documentation: Review SAP documentation for the specific module you are working with to understand the rules governing line item deletions.
  User Permissions: Ensure that you have the necessary permissions to modify the document in question.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to SAP support or your internal IT team for further assistance.