How To Fix KZ091 - Material & is already assigned without production process

KZ091 - Overview

• Message type: E = Error

• Message class: KZ - Cost Object Repetitive Mfg / Process Mfg

• Message number: 091

• Message text: Material & is already assigned without production process

What causes this issue?

You are attempting to assign a material (or the combination material/
<DS:GLOS.3559911290FA5063E10000009B38F984>production process</>) to a
<DS:GLOS.3526B6C8AFAB52B9E10000009B38F974>cost object node</>. However,
the material (or the combination material/production process) has
already been assigned to another cost object node.

System Response

INCLUDE NAKZ091

How to fix this error?

Enter a different object.

Error message extract from SAP system. Copyright SAP SE.

KZ091 - Details

• The SAP error message KZ091 indicates that a material is already assigned to a production process, but there is an attempt to assign it again or to perform an operation that is not allowed because of this existing assignment. This typically occurs in the context of production planning and control, particularly when dealing with production orders, material requirements planning (MRP), or similar processes.
  
  Cause:
  
  Duplicate Assignment: The material is already linked to a production process or order, and the system does not allow reassigning it to another process without first removing the existing assignment.
  Incorrect Configuration: There may be configuration issues in the production process or material master data that prevent the system from recognizing the current assignment correctly.
  Status Issues: The material or production order may be in a status that does not allow further assignments or changes.
  Data Integrity Issues: There could be inconsistencies in the database or master data that lead to