How To Fix M8328 - Higher-level items not allowed

M8328 - Overview

• Message type: E = Error

• Message class: M8 - Invoice Verification/Valuation

• Message number: 328

• Message text: Higher-level items not allowed

What causes this issue?

In the IDoc, bills of material are sent as subordinate items for an
invoice item. The system does not recognize these as being subordinate,
and tries to invoice the same items twice.
You can identify subordinate items by the fact that there is a value in
the field UEPOS in segment E1EDP01.
EDI invoice receipt in Materials Management cannot process IDocs
containing bills of material.

System Response

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M8328 - Higher-level items not allowed ?

  The SAP error message M8328, "Higher-level items not allowed," typically occurs in the context of materials management and inventory management processes, particularly when dealing with bill of materials (BOM) or hierarchical item structures. This error indicates that there is an issue with the way items are structured in a transaction, such as a sales order, production order, or purchase order.
  
  Cause:
  The error usually arises due to one of the following reasons:
  
  
  Item Hierarchy Violation: The transaction is attempting to include a higher-level item (like a parent item in a BOM) where only lower-level items (like components) are allowed. For example, you might be trying to add a finished product instead of its components.
  
  
  Incorrect Item Category: The item category used in the transaction may not support higher-level items. Certain item categories are designed to handle only specific types of items.
  
  
  
  Configuration Issues: There may be configuration settings in the system that restrict the use