How To Fix /IWBEP/SBDSP_DM017 - In Read operation Input mapping is allowed only for key properties

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/SBDSP_DM -

• Message number: 017

• Message text: In Read operation Input mapping is allowed only for key properties

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/SBDSP_DM017 - In Read operation Input mapping is allowed only for key properties ?

  The SAP error message /IWBEP/SBDSP_DM017 typically occurs in the context of SAP Gateway and OData services when there is an issue with the input mapping of properties during a read operation. This error indicates that the input mapping is only allowed for key properties, meaning that the system expects certain properties to be defined as keys in the OData service, and non-key properties are not allowed in the input mapping for read operations.
  Cause:
  
  Incorrect Mapping: The error usually arises when you attempt to map non-key properties in the input mapping for a read operation. In OData services, read operations (GET requests) should only use key properties to identify the resource being requested.
  Service Definition Issues: There may be a misconfiguration in the OData service definition where non-key properties are incorrectly defined or used in the read operation.
  Model Configuration: The data model may not be correctly set up to reflect the key properties, leading to confusion during the read operation.
  
  Solution:
  
  Check Key Properties: Ensure that the properties you are trying to use in the input mapping for the read operation are defined as key properties in the OData service. You can do this by checking the service metadata (usually accessible via the service URL with $metadata).
  Adjust Input Mapping: Modify the input mapping to only include key properties. If you need to filter or retrieve data based on non-key properties, consider using query options (like $filter) instead of input mapping.
  Review Service Implementation: If you are developing or maintaining the OData service, review the implementation to ensure that the key properties are correctly defined in the service's data model.
  Test with Correct Parameters: After making the necessary adjustments, test the read operation again with the correct key parameters to ensure that the error is resolved.
  
  Related Information:
  
  OData Protocol: Understanding the OData protocol and how it handles key properties can help in designing and troubleshooting OData services.
  SAP Gateway: Familiarize yourself with SAP Gateway concepts, especially how it handles service definitions and data models.
  SAP Notes and Documentation: Check SAP Notes and official documentation for any updates or specific guidance related to this error message.
  
  If the issue persists after following these steps, consider reaching out to SAP support or consulting the SAP community for further assistance.