How To Fix EIT_GW_COMMON018 - Array entry &1 of navigation property &2 must be an object.

SAP Error Message - Details

• Message type: E = Error

• Message class: EIT_GW_COMMON - Extensibility Template: Common Messages

• Message number: 018

• Message text: Array entry &1 of navigation property &2 must be an object.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message EIT_GW_COMMON018 - Array entry &1 of navigation property &2 must be an object. ?

  The SAP error message EIT_GW_COMMON018 indicates that there is an issue with the data being processed in an OData service, specifically related to navigation properties. The error message states that "Array entry &1 of navigation property &2 must be an object." This typically occurs when the expected data structure for a navigation property is not being met.
  Cause:
  
  Incorrect Data Structure: The navigation property is expected to contain an object, but instead, it is receiving a primitive type (like a string or number) or an incorrectly structured object.
  Empty or Null Values: The array entry might be empty or null when the OData service expects a valid object.
  Mismatch in Data Model: There may be a mismatch between the data model defined in the OData service and the data being sent in the request.
  Serialization Issues: If the data is being serialized incorrectly before being sent to the OData service, it may lead to this error.
  
  Solution:
  
  Check Data Structure: Ensure that the data being sent to the OData service matches the expected structure. For navigation properties, ensure that the entries are valid objects and not primitive types.
  Validate Input Data: Before sending the data, validate that all required fields are populated and that the data types match the expected types defined in the OData service.
  Review OData Model: Check the OData service metadata to confirm the expected structure of the navigation properties. Make sure that the data being sent aligns with this structure.
  Debugging: Use debugging tools or logs to inspect the data being sent to the OData service. Look for any discrepancies in the data format.
  Error Handling: Implement error handling in your application to catch and log such errors, which can help in diagnosing issues in the future.
  
  Related Information:
  
  OData Services: Understanding how OData services work and how to structure requests is crucial. Familiarize yourself with the OData protocol and the specific service you are working with.
  SAP Gateway: If you are working with SAP Gateway, ensure that the service is properly configured and that the data model is correctly defined.
  SAP Community: Consider checking the SAP Community forums for similar issues and solutions shared by other users.
  
  By addressing the above points, you should be able to resolve the error and ensure that the data being sent to the OData service is correctly structured.