How To Fix /IWBEP/CM_MGW_RT115 - Property field already exists name: '&1' ABAP field name '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_RT -

• Message number: 115

• Message text: Property field already exists name: '&1' ABAP field name '&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.

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_MGW_RT115 - Property field already exists name: '&1' ABAP field name '&2' ?

  The SAP error message /IWBEP/CM_MGW_RT115 indicates that there is a conflict with property names in your OData service. Specifically, it means that a property field with the name specified in the error message already exists in the context of the OData model you are working with. 
  Cause:
  
  Duplicate Property Names: The error typically arises when you have defined two properties with the same name in the same entity type or in the same context of the OData service.
  Model Definition Issues: If you are using annotations or have defined your OData model programmatically, there might be a mistake in how the properties are defined.
  Inconsistent Metadata: If the metadata of your OData service has been changed but not updated in the service implementation, it can lead to conflicts.
  
  Solution:
  
  Check Entity Definitions: Review the entity types in your OData service definition. Ensure that there are no duplicate property names. Each property within an entity type must have a unique name.
  Update Metadata: If you have made changes to the model, ensure that the metadata is updated. You can regenerate the service or refresh the metadata in the SAP Gateway.
  Review Annotations: If you are using annotations, check to ensure that they do not introduce duplicate property names.
  Debugging: Use transaction /IWFND/ERROR_LOG to check for additional details about the error. This can provide more context on where the conflict is occurring.
  Check for Inheritance: If you are using inheritance in your OData model, ensure that the properties from the base entity are not being redefined in the derived entity.
  
  Related Information:
  
  OData Service Implementation: Familiarize yourself with how to implement OData services in SAP, including defining entity types and properties.
  SAP Gateway: Understanding the SAP Gateway framework can help in troubleshooting issues related to OData services.
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide patches related to this error message.
  Documentation: Refer to the official SAP documentation for OData services and the SAP Gateway for best practices in defining and managing your OData models.
  
  By following these steps, you should be able to identify and resolve the issue causing the /IWBEP/CM_MGW_RT115 error message.