How To Fix SADL_GW_EXPOSURE031 - Field name &1 of entity &2 is reserved for Field Control

SAP Error Message - Details

• Message type: E = Error

• Message class: SADL_GW_EXPOSURE - SADL Gateway Exposure

• Message number: 031

• Message text: Field name &1 of entity &2 is reserved for Field Control

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SADL_GW_EXPOSURE031 - Field name &1 of entity &2 is reserved for Field Control ?

  The SAP error message SADL_GW_EXPOSURE031 indicates that there is an issue with the field name in the context of the SAP Gateway and the Service Data Layer (SADL). Specifically, it states that the field name you are trying to use is reserved for Field Control, which means it cannot be used as a regular field in your entity.
  Cause:
  This error typically occurs when:
  
  You are trying to define or expose a field in an entity that is already reserved for internal use by SAP for field control purposes.
  The field name you are using conflicts with predefined field names that are part of the SAP system's metadata.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Field Names: Review the field names you are using in your entity definition. Ensure that none of them match the reserved names used by SAP for field control. You can refer to SAP documentation or the metadata of the entity to identify reserved field names.
  
  
  Rename Fields: If you find that the field name you are trying to use is reserved, consider renaming it to something unique that does not conflict with SAP's reserved names.
  
  
  Review Entity Definition: Ensure that your entity definition is correctly set up and that you are not inadvertently trying to expose a field that should not be exposed.
  
  
  Consult SAP Notes: Check for any relevant SAP Notes or documentation that might provide additional context or updates regarding this error message.
  
  
  Testing: After making changes, test the entity again to ensure that the error is resolved.
  
  
  Related Information:
  
  SAP Gateway: The SAP Gateway is a technology that allows you to connect devices, environments, and applications to SAP systems. Understanding how it works can help you troubleshoot issues related to data exposure.
  Field Control: Field control in SAP refers to the mechanisms that determine how fields are displayed and interacted with in the user interface. Reserved field names are typically part of this control mechanism.
  SADL (Service Data Layer): SADL is a framework that simplifies the development of OData services in SAP. Familiarity with SADL can help you understand how entities and fields are managed.
  
  If you continue to experience issues after following these steps, consider reaching out to SAP support or consulting with a developer who has experience with SAP Gateway and SADL.