How To Fix MJ051 - No modifiable fields exist

SAP Error Message - Details

• Message type: E = Error

• Message class: MJ - Field Selection

• Message number: 051

• Message text: No modifiable fields exist

What causes this issue?

When the system tried to write the field numbers from field selection
to the attributes of the screen fields concerned, it found that no
modifiable screens had yet been defined.

System Response

The screens are not changed.

How to fix this error?

Make sure you complete your field modification maintenance fully.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MJ051 - No modifiable fields exist ?

  The SAP error message MJ051 ("No modifiable fields exist") typically occurs in the context of Material Management (MM) or Production Planning (PP) when you are trying to modify a document or record, such as a purchase order, production order, or material master, but the system has determined that there are no fields available for modification.
  Causes:
  
  Document Status: The document you are trying to modify may be in a status that does not allow changes. For example, a purchase order that has been fully delivered or invoiced may not allow further modifications.
  Field Attributes: The fields you are trying to change may be set as non-modifiable due to configuration settings in the system.
  User Authorizations: The user may not have the necessary authorizations to modify certain fields in the document.
  Data Locking: The record may be locked by another user or process, preventing modifications.
  Business Logic: Certain business rules or logic may prevent modifications to specific fields based on the current state of the document.
  
  Solutions:
  
  Check Document Status: Verify the status of the document you are trying to modify. If it is completed or in a locked state, you may need to take appropriate actions (e.g., reversing a document) to allow modifications.
  Review Field Attributes: Check the configuration settings for the fields in question. If they are set as non-modifiable, you may need to adjust the configuration or consult with your SAP administrator.
  User Authorizations: Ensure that you have the necessary authorizations to modify the fields. If not, contact your SAP security administrator to request the required permissions.
  Unlock the Record: If the record is locked, identify the user or process that is holding the lock and resolve the issue. You can use transaction codes like SM12 to check for locks.
  Consult Documentation: Review any relevant documentation or business rules that may apply to the document you are trying to modify. This may provide insights into why modifications are restricted.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as ME22N (Change Purchase Order), CO02 (Change Production Order), or MM02 (Change Material Master) to navigate to the appropriate screens.
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message MJ051.
  SAP Community: Engage with the SAP Community forums for additional insights and solutions from other users who may have encountered the same issue.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a technical consultant for further assistance.