How To Fix SDDIC_ADT_DDLX014 - Annotation 'Metadata.allowExtensions' missing in '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: SDDIC_ADT_DDLX - Messages for CDS Metadata Extension

• Message number: 014

• Message text: Annotation 'Metadata.allowExtensions' missing in '&1'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SDDIC_ADT_DDLX014 - Annotation 'Metadata.allowExtensions' missing in '&1' ?

  The SAP error message SDDIC_ADT_DDLX014 indicates that there is a missing annotation Metadata.allowExtensions in a specific object, which is referenced by &1. This error typically occurs in the context of SAP development tools, particularly when working with ABAP Development Tools (ADT) in Eclipse or similar environments.
  Cause:
  The error is caused by the absence of the Metadata.allowExtensions annotation in the definition of a data model or service definition. This annotation is essential for allowing extensions to the metadata of the object in question. Without it, the system cannot process the object correctly, leading to this error.
  Solution:
  To resolve this error, you need to add the missing annotation to the relevant object. Here are the steps to do so:
  
  
  Identify the Object: Determine which object is referenced by &1 in the error message. This could be a CDS view, a service definition, or another metadata object.
  
  
  Open the Object in ADT: Use the ABAP Development Tools in Eclipse to open the object that is causing the error.
  
  
  Add the Annotation: In the definition of the object, add the following annotation:
  @Metadata.allowExtensions: true
  This annotation should be added at the appropriate level in the object definition, typically at the top level of the CDS view or service definition.
  
  
  Activate the Object: After adding the annotation, activate the object to ensure that the changes take effect.
  
  
  Test the Changes: After activation, test the functionality that was previously causing the error to confirm that the issue has been resolved.
  
  
  Related Information:
  
  Documentation: Refer to the SAP documentation for more details on annotations and their usage in CDS views and other metadata definitions.
  SAP Notes: Check for any relevant SAP Notes that might provide additional context or solutions for this error.
  Community Forums: If the issue persists, consider reaching out to SAP Community forums or support for further assistance.
  
  By following these steps, you should be able to resolve the SDDIC_ADT_DDLX014 error and ensure that your object is correctly configured to allow extensions.