How To Fix /IWBEP/CM_V4_MED186 - More than one property in the entity type '&1' is flagged as etag

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 186

• Message text: More than one property in the entity type '&1' is flagged as etag

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_MED186 - More than one property in the entity type '&1' is flagged as etag ?

  The SAP error message /IWBEP/CM_V4_MED186 indicates that there is a problem with the entity type in your OData service definition. Specifically, it states that more than one property in the entity type is flagged as an ETag. An ETag (Entity Tag) is used for optimistic concurrency control in OData services, allowing clients to manage updates to resources without conflicts.
  Cause:
  The error occurs when:
  
  You have defined multiple properties in an entity type to be used as ETags. In OData, only one property can be designated as the ETag for an entity.
  This can happen due to incorrect configuration in the data model or service definition, where multiple properties are marked as ETag.
  
  Solution:
  To resolve this error, you need to ensure that only one property in the entity type is marked as an ETag. Here are the steps to do this:
  
  
  Identify the Entity Type: Check the entity type mentioned in the error message (replace &1 with the actual entity type name).
  
  
  Review the Properties: Look at the properties of the identified entity type in your OData service definition. 
  
  
  Modify the ETag Configuration:
  
  Open the relevant data model or service definition in the SAP Gateway Service Builder (transaction code SEGW).
  Navigate to the entity type and check the properties.
  Ensure that only one property is marked as an ETag. You can do this by:
  
  Right-clicking on the property you want to designate as the ETag and selecting the appropriate option to set it as the ETag.
  Unmarking any other properties that are currently set as ETags.
  
  
  
  
  
  Activate the Service: After making the changes, activate the service to apply the new configuration.
  
  
  Test the Service: Once activated, test the OData service to ensure that the error no longer occurs.
  
  
  Related Information:
  
  OData Version: Ensure that you are following the correct OData version specifications, as the handling of ETags may vary between versions.
  SAP Notes: Check for any relevant SAP Notes or documentation that may provide additional context or updates regarding this error.
  Debugging: If the issue persists, consider debugging the service to trace where the ETag properties are being set and ensure that the logic aligns with your intended design.
  
  By following these steps, you should be able to resolve the error and ensure that your OData service functions correctly.