How To Fix SDDIC_ADT_DDLX055 - Cannot annotate '&1'. The type of the annotated entity is not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: SDDIC_ADT_DDLX - Messages for CDS Metadata Extension

• Message number: 055

• Message text: Cannot annotate '&1'. The type of the annotated entity is not supported

What causes this issue?

The type of the annotated entity is not supported.
With the "ANNOTATE VIEW" syntax, the following types are supported:
Views
View Entities
Projection Views

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SDDIC_ADT_DDLX055 - Cannot annotate '&1'. The type of the annotated entity is not supported ?

  The SAP error message SDDIC_ADT_DDLX055 indicates that there is an issue with annotating a specific entity in your ABAP Development Tools (ADT) environment. The message states that the type of the annotated entity is not supported, which typically means that the entity you are trying to annotate does not meet the requirements for the specific annotation you are attempting to apply.
  Cause
  The error can occur due to several reasons:
  
  Unsupported Entity Type: The entity you are trying to annotate may not be of a type that supports the specific annotation you are using. For example, certain annotations may only be applicable to specific types of database objects (like tables or views).
  Incorrect Annotation Usage: You might be using an annotation that is not valid for the context or the entity type you are working with.
  Version Compatibility: The version of the ABAP system or the tools you are using may not support the annotation you are trying to apply.
  Syntax Errors: There could be syntax errors in the way the annotation is written, leading to the system not recognizing it properly.
  
  Solution
  To resolve the error, you can take the following steps:
  
  
  Check Entity Type: Verify that the entity you are trying to annotate is of a type that supports the annotation. Refer to the SAP documentation for the specific annotation to see which entity types are supported.
  
  
  Review Annotation Syntax: Ensure that the syntax of the annotation is correct. Check for any typos or formatting issues.
  
  
  Consult Documentation: Look up the specific annotation in the SAP documentation to ensure that you are using it correctly and that it is applicable to the entity type you are working with.
  
  
  Update Tools/Version: If you suspect that the issue is related to version compatibility, ensure that you are using the latest version of the ABAP Development Tools and that your ABAP system is up to date.
  
  
  Use Alternative Approaches: If the annotation is not supported for the entity type, consider whether there are alternative ways to achieve your goal without using that specific annotation.
  
  
  Seek Help from Community or SAP Support: If you are still unable to resolve the issue, consider reaching out to the SAP community forums or SAP support for assistance.
  
  
  Related Information
  
  SAP Documentation: Always refer to the official SAP Help Portal for the most accurate and detailed information regarding annotations and their usage.
  ABAP Development Tools: Familiarize yourself with the features and limitations of the ABAP Development Tools, as they can provide insights into what is supported and what is not.
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide additional guidance on the error message.
  
  By following these steps, you should be able to identify the cause of the error and implement a suitable solution.