Message type: E = Error
Message class:  /IWBEP/CM_MGW_UM -  
Message number: 058
Message text: Unable to read user details
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_MGW_UM058 Unable to read user details typically occurs in the context of SAP Gateway services, particularly when there is an issue with user authentication or authorization. This error indicates that the system is unable to retrieve the user details necessary for processing a request. Causes: User Not Found: The user ID being used may not exist in the system. Authorization Issues: The user may not have the necessary authorizations to access the requested service. User Profile Issues: There may be issues with the user profile or settings in the SAP system. Network Issues: Connectivity problems between the SAP Gateway and the backend system can also lead to this error.
Configuration Issues: Incorrect configuration of the SAP Gateway or the OData service can result in this error. Solutions: Check User Existence: Verify that the user ID exists in the SAP system. You can do this by checking the user master record using transaction SU01. Review Authorizations: Ensure that
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
/IWBEP/CM_MGW_UM057 User details could not be updated in remote system
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_MGW_UM056 You do not have authorization to change others' user detail
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_MGW_UM059 Multiple BAdI implementations must not be active
What causes this issue?  Multiple BAdI implementations must not be active for <EX>/IWBEP/BD_MGW_UM_USER_MANAGER</>.System Response  The sy...
/IWBEP/CM_MGW_UM060 User Name in key does not match the User Name in request body
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.