How To Fix SADL_GW_EXPOSURE030 - Field control name &1, field &2 entity &3 already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: SADL_GW_EXPOSURE - SADL Gateway Exposure

• Message number: 030

• Message text: Field control name &1, field &2 entity &3 already exists

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SADL_GW_EXPOSURE030 - Field control name &1, field &2 entity &3 already exists ?

  The SAP error message SADL_GW_EXPOSURE030 indicates that there is a conflict in the definition of fields in the context of the SAP Gateway and the Service Definition Language (SDL) used in the SAP Application Development Framework. Specifically, the error message states that a field control name, field, and entity combination already exists, which means that there is a duplication in the metadata definitions.
  Cause:
  
  Duplicate Field Definitions: The error typically arises when there are multiple definitions for the same field in the same entity or when the same field is being defined in different contexts without proper differentiation.
  Modeling Issues: It can also occur due to issues in the data model where the same field is being exposed multiple times in the service definition.
  Changes in Metadata: If there have been recent changes to the metadata or service definitions, it may lead to inconsistencies that trigger this error.
  
  Solution:
  
  Check Field Definitions: Review the field definitions in the relevant entity and ensure that there are no duplicate entries. This can be done in the Data Model or Service Definition.
  Adjust Naming Conventions: If you have multiple fields that are similar, consider renaming them to avoid conflicts.
  Regenerate the Service: If you have made changes to the data model, regenerate the service to ensure that the metadata is updated correctly.
  Clear Cache: Sometimes, clearing the cache of the SAP Gateway can resolve issues related to outdated metadata. You can do this using transaction code /IWFND/CACHE to clear the cache.
  Check for Transport Issues: If the error occurred after a transport, ensure that all relevant objects were transported correctly and that there are no inconsistencies between the development and production environments.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Documentation: Review the official SAP documentation related to the SAP Gateway and SADL (Service Adaptation Definition Language) for best practices in defining entities and fields.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.