How To Fix /IWBEP/CM_V4_MED346 - Entity set path and operation return does not match for operation '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 346

• Message text: Entity set path and operation return does not match for operation '&1'

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_MED346 - Entity set path and operation return does not match for operation '&1' ?

  The SAP error message /IWBEP/CM_V4_MED346 typically occurs in the context of OData services when there is a mismatch between the entity set path and the operation being performed. This error is often related to the configuration of the OData service or the way the request is structured.
  Cause:
  
  Mismatch in Entity Set Path: The entity set path specified in the OData request does not correspond to the expected path defined in the service metadata.
  Incorrect Operation: The operation (e.g., GET, POST, PUT, DELETE) being performed does not match the expected operation for the specified entity set.
  Service Metadata Issues: There may be issues with the service metadata, such as missing or incorrectly defined entity sets or operations.
  Versioning Issues: If there are multiple versions of the OData service, the request may be targeting an incorrect version.
  
  Solution:
  
  
  Check the Request URL: Ensure that the URL used in the OData request matches the entity set path defined in the service metadata. You can access the service metadata by appending $metadata to the service URL.
  
  
  Verify the Operation: Make sure that the HTTP method (GET, POST, etc.) used in the request is appropriate for the entity set you are trying to access. For example, if you are trying to retrieve data, ensure you are using GET.
  
  
  Review Service Implementation: Check the implementation of the OData service in the backend (e.g., ABAP code) to ensure that the entity sets and operations are correctly defined and implemented.
  
  
  Check for Versioning: If your OData service has multiple versions, ensure that you are using the correct version in your request.
  
  
  Debugging: If you have access to the backend system, you can debug the OData service to see how the request is being processed and where the mismatch occurs.
  
  
  Consult Documentation: Review the SAP documentation for OData services to ensure that you are following best practices and guidelines.
  
  
  Related Information:
  
  OData Service Metadata: Accessing the service metadata can provide insights into the available entity sets and operations.
  SAP Gateway: If you are using SAP Gateway, ensure that the service is properly registered and activated.
  Transaction Codes: Use transaction codes like /IWFND/MAINT_SERVICE to manage OData services in SAP.
  Error Logs: Check the error logs in the SAP system for more detailed information about the error.
  
  By following these steps, you should be able to identify the cause of the error and implement the necessary solutions to resolve it.