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

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message KZ091 - Material & is already assigned without production process ?

  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 this error.
  
  Solution:
  
  Check Existing Assignments: Review the production orders or processes to which the material is currently assigned. You can do this by navigating to the relevant transaction (e.g., CO03 for production orders) and checking the assignments.
  Remove Existing Assignment: If the material needs to be reassigned, you may need to first remove it from the current production process. This can usually be done in the production order or process management screen.
  Review Material Master Data: Ensure that the material master data is correctly configured and does not have any inconsistencies. Check the production view and other relevant views for the material.
  Check Status of Production Orders: Ensure that the production orders are in a status that allows changes. If they are completed or closed, you may need to create a new order or adjust the existing one.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on handling this error in your version of SAP.
  Contact Support: If the issue persists, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CO01 (Create Production Order), CO02 (Change Production Order), and CO03 (Display Production Order).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Roles and Authorizations: Ensure that the user has the necessary authorizations to make changes to production orders and material assignments.
  Training and Documentation: Consider providing training for users on how to manage material assignments and production processes effectively to avoid similar issues in the future.
  
  By following these steps, you should be able to resolve the KZ091 error and manage material assignments in your SAP system effectively.