How To Fix /IWBEP/CM_V4_MED037 - Action parameter '&1' already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 037

• Message text: Action parameter '&1' already exists

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_MED037 - Action parameter '&1' already exists ?

  The SAP error message /IWBEP/CM_V4_MED037 Action parameter '&1' already exists typically occurs in the context of SAP Gateway and OData services. This error indicates that there is a duplicate action parameter defined in your OData service metadata. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Duplicate Action Parameter: The error arises when you define an action parameter with the same name more than once in the same action within your OData service.
  Service Definition Issues: It may also occur due to inconsistencies or errors in the service definition or the underlying data model.
  
  Solution:
  
  
  Check Action Parameters:
  
  Go to the service definition in the SAP Gateway Service Builder (transaction code SEGW).
  Locate the action that is causing the error and check the parameters defined for that action.
  Ensure that each parameter has a unique name. If you find duplicates, rename or remove the redundant parameters.
  
  
  
  Regenerate the Service:
  
  After making changes to the action parameters, regenerate the service. You can do this by right-clicking on the service in the Service Builder and selecting "Generate".
  Activate the service again to ensure that the changes take effect.
  
  
  
  Check for Inheritance:
  
  If your service is inheriting from another service or using a base class, check the base definitions for any duplicate parameters that might be inherited.
  
  
  
  Review Metadata:
  
  If you have made changes to the underlying data model or service definition, ensure that the metadata is updated accordingly. You can refresh the metadata in the service.
  
  
  
  Test the Service:
  
  After making the necessary changes, test the OData service to ensure that the error is resolved and that the service behaves as expected.
  
  
  
  Related Information:
  
  SAP Gateway: This is a technology that allows you to connect devices, environments, and applications to SAP systems. Understanding how OData services work within SAP Gateway is crucial for troubleshooting.
  OData Services: Familiarize yourself with OData service concepts, including actions, parameters, and entity types, as this will help in understanding how to structure your services correctly.
  SAP Notes: Check for any relevant SAP Notes or documentation that might provide additional insights or updates 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.