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

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message GR479 - You must not change standard layout SAP ?

  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 ABAP programs or SMARTFORMS for smart forms).
  Copy the standard layout to a new custom layout and make your modifications there.
  
  
  
  Check User Permissions: Ensure that you have the necessary authorizations to make changes. If you do not have the required permissions, contact your SAP administrator to request access or to perform the changes on your behalf.
  
  
  Consult Documentation: Review SAP documentation or help resources for the specific module you are working with. There may be guidelines on how to properly create or modify layouts without violating system rules.
  
  
  Contact SAP Support: If you believe that you should be able to make changes or if you encounter persistent issues, consider reaching out to SAP support for assistance.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context on layout management.
  Training and Documentation: Familiarize yourself with SAP's best practices for layout management, which can often be found in training materials or SAP Help Portal.
  Community Forums: Engage with SAP community forums or user groups where you can ask questions and share experiences with other SAP users.
  
  By following these steps, you should be able to resolve the GR479 error and effectively manage layouts in your SAP environment.