How To Fix /IWNGW/CM_HUB051 - The action '&1' is not valid for ParentId '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWNGW/CM_HUB -

• Message number: 051

• Message text: The action '&1' is not valid for ParentId '&2'

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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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWNGW/CM_HUB051 - The action '&1' is not valid for ParentId '&2' ?

  The SAP error message /IWNGW/CM_HUB051 The action '&1' is not valid for ParentId '&2' typically occurs in the context of SAP Gateway services, particularly when working with OData services in SAP Fiori applications. This error indicates that the action you are trying to perform is not valid for the specified ParentId, which usually refers to a specific entity or record in the system.
  Causes:
  
  Invalid Action: The action you are trying to execute (represented by &1) is not defined for the entity identified by ParentId (&2). This could be due to a mismatch between the action and the entity type.
  Authorization Issues: The user may not have the necessary permissions to perform the action on the specified entity.
  Service Configuration: The OData service may not be properly configured to handle the action for the specified entity.
  Data State: The state of the data might not allow the action to be performed (e.g., trying to delete a record that is already in use).
  Incorrect URL or Parameters: The request URL or parameters might be incorrectly formed, leading to the action being unrecognized.
  
  Solutions:
  
  Check Action Validity: Verify that the action you are trying to perform is indeed valid for the specified ParentId. Review the OData service documentation or metadata to confirm this.
  Review Authorization: Ensure that the user has the necessary authorizations to perform the action on the specified entity. This may involve checking roles and permissions in the SAP system.
  Service Configuration: Check the configuration of the OData service in the SAP Gateway. Ensure that the action is correctly defined in the service and that it is associated with the correct entity type.
  Debugging: Use transaction /IWFND/ERROR_LOG to check for any additional error messages or logs that might provide more context about the issue.
  Check Data State: Ensure that the data associated with the ParentId is in a state that allows the action to be performed. For example, if you are trying to delete a record, ensure it is not locked or in use.
  Correct URL/Parameters: Double-check the request URL and parameters being sent to the OData service to ensure they are correctly formatted and valid.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific error message.
  OData Service Documentation: Review the documentation for the OData service you are using to understand the actions available and their requirements.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and what solutions they found effective.
  
  If the issue persists after trying the above solutions, consider reaching out to your SAP support team for further assistance.