How To Fix SADL_GW_DT_SB_UI017 - Target '&1' of navigation property '&2' of source '&3' is not mapped

SAP Error Message - Details

• Message type: E = Error

• Message class: SADL_GW_DT_SB_UI - Gateway Service Builder UI Integration for SADL

• Message number: 017

• Message text: Target '&1' of navigation property '&2' of source '&3' is not mapped

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SADL_GW_DT_SB_UI017 - Target '&1' of navigation property '&2' of source '&3' is not mapped ?

  The SAP error message SADL_GW_DT_SB_UI017 indicates that there is an issue with the navigation property in the context of the SAP Gateway and the Service Data Layer (SADL). Specifically, it means that the target of a navigation property is not properly mapped in the data model.
  Cause:
  This error typically arises due to one of the following reasons:
  
  
  Missing Mapping: The target entity of the navigation property is not defined or mapped in the data model. This can happen if the entity is not included in the service definition or if there is a mismatch in the entity names.
  
  
  Incorrect Configuration: The configuration of the OData service may not correctly reflect the relationships between entities, leading to navigation properties that cannot be resolved.
  
  
  Changes in Data Model: If there have been recent changes to the underlying data model (like adding or renaming entities or properties), the OData service may not have been updated accordingly.
  
  
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to access the target entity, which can lead to this error.
  
  
  Solution:
  To resolve the error, you can follow these steps:
  
  
  Check Entity Mapping:
  
  Go to the Service Builder (transaction code SEGW) and check the entity types and their relationships.
  Ensure that the target entity of the navigation property is defined and correctly mapped.
  
  
  
  Update OData Service:
  
  If there have been changes to the data model, regenerate the OData service. This can be done by right-clicking on the service in the Service Builder and selecting "Generate".
  
  
  
  Check Navigation Properties:
  
  Verify that the navigation properties are correctly defined in both the source and target entities. Ensure that the names match and that the relationships are correctly established.
  
  
  
  Test the Service:
  
  Use the SAP Gateway Client (transaction /IWFND/GW_CLIENT) to test the OData service and check if the navigation properties are working as expected.
  
  
  
  Authorization Check:
  
  Ensure that the user has the necessary authorizations to access the target entity. You can check this in the user roles and authorizations.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the service to trace where the navigation property resolution is failing.
  
  
  
  Related Information:
  
  SAP Gateway: The SAP Gateway is a technology that allows you to connect devices and applications to SAP systems. It enables the creation of OData services.
  Service Data Layer (SADL): SADL is a framework that simplifies the development of OData services by providing a layer that abstracts the underlying data model.
  OData Services: OData (Open Data Protocol) is a standard protocol for building and consuming RESTful APIs. Understanding OData concepts can help in troubleshooting related issues.
  
  By following these steps, you should be able to identify and resolve the issue causing the SADL_GW_DT_SB_UI017 error message.