How To Fix ISU_UMC_ODATA121 - Selection option is missing for parameter &1

SAP Error Message - Details

• Message type: E = Error

• Message class: ISU_UMC_ODATA - Message class for the Multichannel oData services

• Message number: 121

• Message text: Selection option is missing for parameter &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ISU_UMC_ODATA121 - Selection option is missing for parameter &1 ?

  The SAP error message ISU_UMC_ODATA121 indicates that a selection option is missing for a parameter in an OData service related to the SAP IS-U (Utilities) module. This error typically arises when a required parameter is not provided in the OData request, which is necessary for the service to process the request correctly.
  Cause:
  
  Missing Parameter: The most common cause is that the OData request is missing a required selection parameter. This could be due to a misconfiguration in the OData service or an oversight in the request being sent.
  Incorrect OData Service Configuration: The OData service may not be properly configured to handle the parameters being sent.
  Version Mismatch: There may be a mismatch between the OData service version and the client application making the request.
  
  Solution:
  
  Check the OData Request: Review the OData request being sent to ensure that all required parameters are included. Make sure that the parameter indicated by &1 in the error message is being passed correctly.
  Review OData Service Metadata: Access the OData service metadata (usually available at the service URL with $metadata appended) to understand the required parameters and their expected formats.
  Update OData Service: If the service is not configured correctly, you may need to update the OData service definition in the SAP backend to ensure that it correctly defines the required parameters.
  Consult Documentation: Refer to the SAP documentation for the specific OData service you are using to understand the expected parameters and their usage.
  Debugging: If you have access to the backend, you can debug the OData service to see how it processes incoming requests and identify where the missing parameter is causing the issue.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the specific OData service you are using. There may be known issues or patches available.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  OData Documentation: Familiarize yourself with OData standards and best practices, as well as SAP's implementation of OData services.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.