How To Fix GR479 - You must not change standard layout SAP

GR479 - Overview

• Message type: E = Error

• Message class: GR - Report Writer

• Message number: 479

• Message text: You must not change standard layout SAP

What causes this issue?

The standard layout 'SAP' is delivered by SAP and must not be changed.

System Response

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

How to fix this error?

If required, assign a standard layout that you have defined yourself to
your reports. You can copy the standard layout SAP.

Error message extract from SAP system. Copyright SAP SE.

GR479 - Details

• The SAP error message GR479 ("You must not change standard layout") typically occurs when a user attempts to modify a standard layout in SAP that is not allowed. This can happen in various contexts, such as when working with reports, forms, or other standard SAP objects.
  
  Cause:
  
  Standard Layout Protection: SAP protects standard layouts to ensure system integrity and consistency. Modifying these layouts can lead to issues in the system, which is why the error is triggered.
  User Permissions: The user may not have the necessary permissions to make changes to standard layouts.
  System Configuration: The system may be configured to prevent changes to standard layouts as a best practice.
  
  
  Solution:
  
  
  Use Custom Layouts: Instead of modifying the standard layout, create a custom layout. This can usually be done by copying the standard layout and then making your changes to the copy.
  
  Navigate to the layout management area (e.g., for reports, use transaction codes like SE38 for