How To Fix CL_SADL_GW_MDE_MSGX016 - &: Duplicate annotation property: &

SAP Error Message - Details

• Message type: E = Error

• Message class: CL_SADL_GW_MDE_MSGX - texts for parser

• Message number: 016

• Message text: &: Duplicate annotation property: &

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message CL_SADL_GW_MDE_MSGX016 - &: Duplicate annotation property: & ?

  The SAP error message CL_SADL_GW_MDE_MSGX016 with the description "Duplicate annotation property: &" typically occurs in the context of SAP Gateway and the SAP Application Development Framework (SADL). This error indicates that there are duplicate annotation properties defined in your OData service or in the metadata of your application.
  Cause:
  
  
  Duplicate Annotations: The error is triggered when the same annotation property is defined more than once in the metadata of an OData service. This can happen if:
  
  Annotations are defined multiple times in the same entity or property.
  There are conflicting definitions in different parts of the service or in different versions of the service.
  
  
  
  Model Configuration Issues: If the service is generated from a model that has inconsistencies or errors, it can lead to duplicate annotations.
  
  
  Code Changes: If there have been recent changes in the code or model definitions that were not properly synchronized, it could lead to this error.
  
  
  Solution:
  
  
  Check Metadata: Review the metadata of your OData service to identify where the duplicate annotation is defined. You can do this by:
  
  Accessing the service metadata URL (e.g., http://<host>:<port>/sap/opu/odata/sap/<service_name>/$metadata).
  Looking for the specific annotation property mentioned in the error message.
  
  
  
  Remove Duplicates: Once you identify the duplicate annotations, remove or consolidate them to ensure that each annotation property is defined only once.
  
  
  Regenerate Service: If the service is generated from a model, consider regenerating the service after making the necessary changes to the model to ensure that the metadata is updated correctly.
  
  
  Check for Conflicts: If you are using multiple versions of the same service or have multiple services that might be conflicting, ensure that there are no overlapping definitions.
  
  
  Testing: After making the changes, test the OData service again to ensure that the error is resolved.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. Sometimes, there are specific fixes or recommendations provided by SAP.
  Documentation: Refer to the SAP Gateway and SADL documentation for best practices on defining annotations and managing OData services.
  Community Forums: If the issue persists, consider reaching out to SAP Community forums or support for additional assistance.
  
  By following these steps, you should be able to resolve the CL_SADL_GW_MDE_MSGX016 error and ensure that your OData service functions correctly without duplicate annotations.