How To Fix MO421 - The system settings do not allow any changes

SAP Error Message - Details

• Message type: E = Error

• Message class: MO - Modeling and Prototyping

• Message number: 421

• Message text: The system settings do not allow any changes

What causes this issue?

The system settings (SE06 and SCC4) are such that you cannot make any
changes to this table in this client.

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

System Response

How to fix this error?

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 MO421 - The system settings do not allow any changes ?

  The SAP error message MO421 ("The system settings do not allow any changes") typically occurs in the context of production orders or material movements when the system settings restrict modifications to certain data. This can happen for various reasons, including configuration settings, status of the order, or user authorizations.
  Causes:
  
  Order Status: The production order may be in a status that does not allow changes (e.g., "TECO" - Technically Completed).
  System Configuration: The configuration settings in the system may restrict changes to certain fields or data after a specific point in the process.
  User Authorizations: The user may not have the necessary authorizations to make changes to the order or material.
  Document Type Restrictions: Certain document types may have restrictions on changes based on business rules or settings in the system.
  
  Solutions:
  
  Check Order Status: Verify the status of the production order. If it is in a status that does not allow changes (like TECO), you may need to revert it to a status that allows changes (if applicable) or create a new order.
  Review Configuration Settings: Consult with your SAP configuration team to review the settings related to production orders and material movements. They may need to adjust the settings to allow changes.
  User Authorizations: Ensure that the user has the necessary authorizations to make changes. This may involve checking roles and permissions in the SAP system.
  Consult Documentation: Review any relevant documentation or guidelines that may outline the restrictions on changes for the specific process you are working with.
  Contact Support: If the issue persists, consider reaching out to SAP support or your internal IT support team for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CO02 (Change Production Order) or CO03 (Display Production Order) to check the order status and details.
  SAP Notes: Check for any SAP Notes related to this error message for additional insights or patches that may address the issue.
  Training and Documentation: Ensure that users are trained on the processes and restrictions related to production orders to minimize the occurrence of such errors.
  
  By following these steps, you should be able to identify the cause of the MO421 error and implement a solution to resolve it.