How To Fix CL_SADL_GW_MDE_MSG018 - ANNONAME: Property already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: CL_SADL_GW_MDE_MSG -

• Message number: 018

• Message text: ANNONAME: Property already exists

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CL_SADL_GW_MDE_MSG018 - ANNONAME: Property already exists ?

  The SAP error message CL_SADL_GW_MDE_MSG018 ANNONAME: Property already exists typically occurs in the context of the SAP Gateway and the SAP ABAP programming environment, particularly when working with the SAP Advanced Data Modeling Layer (ADL) or when defining OData services.
  Cause:
  This error indicates that there is an attempt to create or define a property in an OData service or data model that already exists. This can happen due to:
  
  Duplicate Property Definitions: You may have defined the same property multiple times in your data model or OData service.
  Inconsistent Metadata: If the metadata of the OData service is not consistent or has not been updated properly, it may lead to this error.
  Model Changes: If changes were made to the data model without properly regenerating or updating the OData service, it can lead to conflicts.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Property Definitions:
  
  Review the data model and ensure that there are no duplicate property definitions. Look for properties with the same name in the same context.
  
  
  
  Regenerate the OData Service:
  
  If you have made changes to the data model, regenerate the OData service. This can be done using transaction code /IWFND/MAINT_SERVICE to maintain and activate the service.
  
  
  
  Clear Cache:
  
  Clear the cache of the OData service. You can do this by using transaction /IWFND/CACHE to clear the cache for the OData service.
  
  
  
  Check Metadata:
  
  Ensure that the metadata of the OData service is up to date. You can check the metadata by accessing the service URL in a browser and reviewing the XML or JSON response.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the code where the error occurs. This may provide insights into why the property is being defined multiple times.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or community forums for any known issues or updates related to the specific version of SAP you are using.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific fixes or patches related to this error message.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and how they resolved them.
  OData Service Documentation: Familiarize yourself with the OData service documentation to understand best practices for defining properties and managing data models.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.