/IWBEP/SBDSP_UI034 - Only attributes can be selected

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/SBDSP_UI -

• Message number: 034

• Message text: Only attributes can be selected

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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AnswerBot

• What is the cause and solution for SAP error message /IWBEP/SBDSP_UI034 - Only attributes can be selected ?

  The SAP error message /IWBEP/SBDSP_UI034: Only attributes can be selected typically occurs in the context of SAP Gateway or OData services when there is an attempt to select a non-attribute field in a query. This error indicates that the system expects only attributes (fields that are part of the entity's definition) to be selected, but a non-attribute field (like a navigation property or a complex type) has been included in the selection.
  Cause:
  
  Selection of Non-Attribute Fields: The most common cause is that the OData query is trying to select fields that are not defined as attributes in the entity model. This can happen if the query is constructed incorrectly or if there is a misunderstanding of the entity structure.
  Incorrect Entity Definition: The entity definition in the OData service may not be correctly set up to expose certain fields as attributes.
  Navigation Properties: Attempting to select navigation properties directly in the query can lead to this error, as navigation properties are not considered attributes.
  
  Solution:
  
  
  Review the OData Query: Check the OData query being executed. Ensure that only attributes defined in the entity are being selected. Remove any non-attribute fields or navigation properties from the selection.
  Example of a correct query:
  /sap/opu/odata/sap/YOUR_SERVICE_NAME/EntitySet?$select=Attribute1,Attribute2
  
  
  Check Entity Definition: Review the entity definition in the OData service. Ensure that all required fields are defined as attributes and that the service is correctly exposing them.
  
  
  Use Navigation Properties Correctly: If you need to access related data, consider using $expand to include related entities instead of trying to select their fields directly.
  Example of using $expand:
  /sap/opu/odata/sap/YOUR_SERVICE_NAME/EntitySet?$expand=RelatedEntity
  
  
  Debugging: If you have access to the backend, you can debug the OData service to see how the query is being processed and identify where the issue arises.
  
  
  Consult Documentation: Refer to the SAP documentation for OData services and the specific service you are working with to understand the expected structure and limitations.
  
  
  Related Information:
  
  SAP Gateway: This error is often encountered in the context of SAP Gateway services, which expose business data as OData services.
  OData Protocol: Understanding the OData protocol and how it handles entity relationships, attributes, and navigation properties can help in constructing valid queries.
  SAP Community: If the issue persists, consider reaching out to the SAP Community or forums for additional support and insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the error and successfully execute your OData queries.