How To Fix SADL_GW_V4_MODEL010 - Cannot change Type via Custom Type.

SAP Error Message - Details

• Message type: E = Error

• Message class: SADL_GW_V4_MODEL - OData Version 4 Enabling: Model Messages

• Message number: 010

• Message text: Cannot change Type via Custom Type.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SADL_GW_V4_MODEL010 - Cannot change Type via Custom Type. ?

  The SAP error message SADL_GW_V4_MODEL010: Cannot change Type via Custom Type typically occurs in the context of SAP Gateway and the SAP ABAP programming environment, particularly when working with the SAP Data Access Layer (SADL) and custom types in OData services.
  Cause:
  This error usually arises when there is an attempt to change the type of a field in a data model that is defined using a custom type. In SAP Gateway, custom types are often used to define the structure of data that is exposed through OData services. If the system detects an inconsistency or an invalid operation related to the type definition, it will throw this error.
  Common causes include:
  
  Inconsistent Type Definitions: The custom type being used may not match the expected type in the data model.
  Incorrect Mapping: There may be an issue with how fields are mapped between the data model and the custom type.
  Changes in Data Model: If there have been recent changes to the data model or the underlying database structure, it may lead to this error if the custom type is not updated accordingly.
  
  Solution:
  To resolve the SADL_GW_V4_MODEL010 error, you can follow these steps:
  
  
  Check Custom Type Definition:
  
  Verify the definition of the custom type being used. Ensure that it matches the expected structure and data types in the data model.
  
  
  
  Review Data Model:
  
  Check the data model for any inconsistencies. Ensure that all fields are correctly defined and that their types align with the custom type.
  
  
  
  Update Mappings:
  
  If there are mappings between the data model and the custom type, review them to ensure they are correct. Update any mappings that may be causing the issue.
  
  
  
  Regenerate OData Service:
  
  If changes have been made to the data model or custom types, regenerate the OData service to ensure that the changes are reflected in the service definition.
  
  
  
  Check for Dependencies:
  
  Look for any dependencies or references to the custom type in other parts of the application. Ensure that all references are consistent and valid.
  
  
  
  Debugging:
  
  If the issue persists, consider using debugging tools to trace the execution and identify where the type change is being attempted.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or community forums for additional insights or similar issues encountered by other users.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  OData Service Documentation: Review the documentation for OData services in SAP Gateway to understand how custom types should be defined and used.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.