How To Fix MJ057 - You cannot change table assignments in display mode

MJ057 - Overview

• Message type: E = Error

• Message class: MJ - Field Selection

• Message number: 057

• Message text: You cannot change table assignments in display mode

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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.

MJ057 - Details

• The SAP error message MJ057, "You cannot change table assignments in display mode," typically occurs when a user attempts to modify or change table assignments in a transaction or screen that is currently in display mode rather than in edit mode. This is a common issue in SAP when users do not have the necessary permissions or are not in the correct mode to make changes.
  
  Cause:
  
  Display Mode: The user is currently in display mode, which does not allow for changes to be made to the data or configuration.
  User Permissions: The user may not have the necessary authorizations to make changes to the table assignments.
  Transaction Type: The transaction being used may inherently restrict changes to certain data types or configurations.
  
  
  Solution:
  
  Switch to Edit Mode: If you have the necessary permissions, switch from display mode to edit mode. This can usually be done by selecting an "Edit" button or option in the SAP