Message type: E = Error
Message class:  /IWBEP/CM_CP -  
Message number: 023
Message text: No payload supplied
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.
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.
The SAP error message /IWBEP/CM_CP023 No payload supplied typically occurs in the context of SAP Gateway and OData services when a request is made without the necessary payload. This can happen in various scenarios, such as when trying to create or update an entity without providing the required data.
Cause: Missing Payload: The most common cause is that the HTTP request (usually a POST or PUT request) does not include a payload in the body. This is essential for operations that require data to be sent to the server. Incorrect HTTP Method: Using an HTTP method that does not expect a payload (like GET) when a payload is required. Client-Side Issues: The client application (like a UI5 app or Postman) may not be correctly configured to send the payload. Service Configuration: The OData service might not be properly configured to handle the request.
Solution: Check the Request: Ensure that the request being sent includes a valid payload.
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
/IWBEP/CM_CP022 OAuth settings incompletely specified
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
/IWBEP/CM_CP021 Proxy model '&1' version '&2' could not be deleted
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
/IWBEP/CM_CP024 OAuth flow not supported
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
/ISDFPS/PM_RELOC_CHK129 Equipment &1 unlocked
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
Click on this link to search all SAP messages.