How To Fix MTG_EMAIL015 - CDS view must not be changed for customer templates

SAP Error Message - Details

• Message type: E = Error

• Message class: MTG_EMAIL - E-Mail API Messages

• Message number: 015

• Message text: CDS view must not be changed for customer templates

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MTG_EMAIL015 - CDS view must not be changed for customer templates ?

  The SAP error message MTG_EMAIL015 indicates that there is an issue with a Core Data Services (CDS) view that is being modified in a way that is not allowed for customer templates. This error typically arises in the context of SAP S/4HANA or SAP Fiori applications where CDS views are used to define data models.
  Cause:
  The error occurs because:
  
  Modification Restrictions: SAP restricts changes to certain CDS views that are part of standard templates or applications. This is to ensure that the integrity and functionality of the standard application are maintained.
  Custom Development: If a customer attempts to modify a standard CDS view directly, it can lead to inconsistencies and issues during upgrades or when applying patches.
  
  Solution:
  To resolve this error, consider the following approaches:
  
  
  Use of Custom CDS Views: Instead of modifying the standard CDS view, create a custom CDS view that references the standard view. This allows you to extend or modify the data model without directly changing the standard view.
  
  
  Enhancement Options: Check if there are enhancement options available for the standard CDS view. SAP often provides ways to enhance standard functionality without direct modifications.
  
  
  Consult Documentation: Review the SAP documentation related to the specific CDS view you are working with. There may be guidelines or best practices for extending or using the view.
  
  
  SAP Notes: Search for relevant SAP Notes that may address this specific error or provide guidance on how to handle it. SAP Notes can provide fixes or workarounds for known issues.
  
  
  Development Guidelines: Follow SAP's development guidelines for creating custom objects. This includes using the appropriate naming conventions and ensuring that your custom developments are compliant with SAP's standards.
  
  
  Related Information:
  
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues. You can find discussions, solutions, and best practices shared by other SAP professionals.
  SAP Help Portal: Utilize the SAP Help Portal for detailed documentation on CDS views, including how to create and manage them.
  Training and Resources: Consider SAP training resources or courses that focus on CDS views and custom development in SAP S/4HANA.
  
  By following these steps, you should be able to address the MTG_EMAIL015 error effectively while adhering to SAP's best practices for development.