How To Fix PK324 - Qualifier &1 is not allowed in the 'Reference data' section

PK324 - Overview

• Message type: E = Error

• Message class: PK - Production - KANBAN

• Message number: 324

• Message text: Qualifier &1 is not allowed in the 'Reference data' section

What causes this issue?

The customer's PO number could not be determined, since it is a
matchcode field.

System Response

IDoc processing has been terminated.

How to fix this error?

The system expected '001' as qualifier for the reference segment.
If necessary, process the IDoc in the workflow inbox.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PK324 - Qualifier &1 is not allowed in the 'Reference data' section ?

  The SAP error message PK324, which states "Qualifier &1 is not allowed in the 'Reference data' section," typically occurs in the context of the SAP system when dealing with master data or transactional data that involves reference data qualifiers. This error indicates that a specific qualifier (represented by &1) is not valid or permitted in the section of the data where reference data is being defined or processed.
  
  Cause:
  
  Invalid Qualifier: The qualifier being used is not recognized or is not allowed in the context of the reference data section. This could be due to a typo, an outdated qualifier, or a qualifier that is not configured in the system.
  
  Configuration Issues: The system may not be properly configured to accept the specified qualifier. This could be due to missing settings in the customizing or master data configuration.
  Data Entry Errors: There may be errors in the data entry process, such as incorrect data