How To Fix AQV321 - This line must not be deleted

AQV321 - Overview

• Message type: E = Error

• Message class: AQV - Message texts for SAP Query

• Message number: 321

• Message text: This line must not be deleted

What causes this issue?

You tried to delete the header line containing the title in statistics
or in a ranking list, but you may not 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.

AQV321 - Details

• The SAP error message AQV321, which states "This line must not be deleted," typically occurs in the context of document processing, such as when working with purchase orders, sales orders, or other transactional documents. This error indicates that the system has identified a line item that is critical and cannot be removed due to business rules or dependencies.
  Causes:
  
  Critical Line Item: The line item may be essential for the integrity of the document, such as a mandatory item or a line that has already been processed in some way (e.g., goods receipt, invoice).
  Dependencies: There may be other documents or processes that depend on this line item, making it necessary to retain it.
  Configuration Settings: Certain configurations in the SAP system may enforce rules that prevent the deletion of specific line items.
  
  Solutions:
  
  Review Document: Check the document to understand why the line item is critical. Look for any dependencies or related documents that may