How To Fix SADL_GW_DT_CDS011 - Annotation '@ObjectModel.semanticKey' is required for UUID-based models.

SAP Error Message - Details

• Message type: E = Error

• Message class: SADL_GW_DT_CDS - Messages CDS Checks

• Message number: 011

• Message text: Annotation '@ObjectModel.semanticKey' is required for UUID-based models.

What causes this issue?

If you use a UUID-based model, a semantic key is required in the CDS
view.

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?

Add the annotation '@ObjectModel.semanticKey:'xxx'' to the CDS view.

Procedure for System Administrators

Contact the corresponding developer of the CDS view to correct the
error.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SADL_GW_DT_CDS011 - Annotation '@ObjectModel.semanticKey' is required for UUID-based models. ?

  The SAP error message SADL_GW_DT_CDS011 indicates that there is a missing annotation @ObjectModel.semanticKey in your Core Data Services (CDS) view definition. This annotation is required when you are working with UUID-based models in SAP, as it specifies which field(s) in your data model should be treated as the semantic key.
  Cause:
  The error occurs because:
  
  You are using a UUID-based model, which requires a semantic key to uniquely identify records.
  The CDS view that you are trying to use does not have the @ObjectModel.semanticKey annotation defined for the appropriate field(s).
  
  Solution:
  To resolve this error, you need to add the @ObjectModel.semanticKey annotation to your CDS view definition. Here’s how you can do it:
  
  
  Identify the UUID Field: Determine which field in your CDS view should be treated as the semantic key. This is typically the UUID field.
  
  
  Modify the CDS View: Add the @ObjectModel.semanticKey annotation to the identified field. Here’s an example of how to do this:
  @AbapCatalog.sqlViewName: 'Z_MY_CDS_VIEW'
  @AbapCatalog.compiler.compareFilter: true
  @AccessControl.authorizationCheck: #CHECK
  @ObjectModel.semanticKey: 'UUID_FIELD'
  define view Z_MY_CDS_VIEW as select from my_table
  {
      key UUID_FIELD,  // This should be your UUID field
      other_field1,
      other_field2
  }
  
  
  Activate the CDS View: After making the changes, activate the CDS view to ensure that the changes take effect.
  
  
  Test the CDS View: Once activated, test the CDS view to confirm that the error has been resolved.
  
  
  Related Information:
  
  UUID: Universally Unique Identifier, often used in SAP applications to uniquely identify records.
  CDS Views: Core Data Services views are a way to define semantically rich data models in SAP, allowing for complex queries and data manipulation.
  Annotations: Annotations in CDS views provide metadata that can influence how the data is processed and presented in applications.
  
  Additional Considerations:
  
  Ensure that the field you designate as the semantic key is unique across the dataset.
  If you have multiple fields that should be part of the semantic key, you can list them all in the annotation, separated by commas.
  Review SAP documentation for any specific requirements or best practices related to UUID-based models and CDS annotations.
  
  By following these steps, you should be able to resolve the SADL_GW_DT_CDS011 error and successfully implement your UUID-based model in SAP.