How To Fix /IWBEP/CM_V4_COS028 - Complex property SAP__MESSAGE is computed and not changeable.

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_COS -

• Message number: 028

• Message text: Complex property SAP__MESSAGE is computed and not changeable.

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_COS028 - Complex property SAP__MESSAGE is computed and not changeable. ?

  The error message /IWBEP/CM_V4_COS028 Complex property SAP__MESSAGE is computed and not changeable typically occurs in the context of SAP Gateway and OData services. This error indicates that you are trying to modify a property that is computed and therefore cannot be changed directly.
  Cause:
  
  Computed Property: The property SAP__MESSAGE is likely a computed property that is generated by the system based on certain conditions or logic. Since it is not meant to be modified directly, any attempt to do so will trigger this error.
  Incorrect Data Handling: The error may arise if the application logic attempts to set or update this property when it should not be doing so.
  Service Definition: The OData service might be incorrectly defined, leading to attempts to modify properties that are not intended to be changed.
  
  Solution:
  
  Review the Code: Check the code where the property SAP__MESSAGE is being set or modified. Ensure that you are not trying to change this property directly.
  Understand the Property: Investigate the purpose of the SAP__MESSAGE property. If it is meant to convey information (like error messages or status), it should be read-only from the perspective of the client application.
  Adjust Logic: If your application logic requires displaying messages, consider using a different approach to retrieve and display messages without attempting to modify the computed property.
  Service Metadata: Review the OData service metadata to understand which properties are computed and which are changeable. This can help you avoid similar issues in the future.
  Debugging: Use debugging tools to trace the request and response cycle to see where the property is being incorrectly handled.
  
  Related Information:
  
  SAP Gateway Documentation: Refer to the official SAP Gateway documentation for more details on OData services and how to handle computed properties.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and what solutions they have found.
  OData Protocol: Familiarize yourself with the OData protocol specifications, especially regarding entity properties and their mutability.
  
  By following these steps, you should be able to resolve the error and ensure that your application interacts correctly with the OData service.