How To Fix /IWBEP/CM_MGW_RT182 - Is-Not-Modified is not allowed in case of framework expand

/IWBEP/CM_MGW_RT182 - Overview

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_RT -

• Message number: 182

• Message text: Is-Not-Modified is not allowed in case of framework expand

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.

/IWBEP/CM_MGW_RT182 - Details

• The SAP error message /IWBEP/CM_MGW_RT182 Is-Not-Modified is not allowed in case of framework expand typically occurs in the context of OData services when there is an issue with the handling of the HTTP response, particularly when using the $expand query option.
  
  Cause:
  
  
  HTTP Status Code: The error indicates that the OData service is trying to return a response with a status code of 304 Not Modified while also attempting to use the $expand option. The 304 Not Modified status is used to indicate that the resource has not changed since the last request, and thus the client can use the cached version. However, when expanding entities, the service needs to provide the full data structure, which cannot be satisfied with a 304 response.
  
  
  Caching Mechanism: This error can also arise from the caching mechanism in place, where the client is expecting a full response but the server is indicating that the data has