Message type: E = Error
Message class:  /IWBEP/CM_MGW_BOP_DT -  
Message number: 165
Message text: No Authorization to generate Backend Operation Proxy classes
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_BOP_DT165 indicates that there is no authorization to generate Backend Operation Proxy (BOP) classes in the context of SAP Gateway. This typically occurs when a user attempts to perform actions related to the generation of proxy classes for OData services but lacks the necessary authorizations.
Cause: Missing Authorizations: The user does not have the required authorizations to execute the transaction or function that generates the Backend Operation Proxy classes. Role Assignment: The user may not be assigned the appropriate roles that include the necessary authorization objects. System Configuration: There may be system-level restrictions or configurations that prevent the generation of proxy classes.
Solution: Check User Authorizations: Use transaction SU53 immediately after the error occurs to check which authorization checks failed. This will provide insight into what specific authorizations are missing. Alternatively, you can use transaction SU01 to view the user’s roles and authorizations. Assign Required Roles: Ensure that the user has the necessary roles assigned. Common
 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_BOP_DT164 Generation of WS BOP is supported for SAP NW 702 and above releases
What causes this issue?  Generation of BOP for a WS is not supported in lower releases than SAP NetWeaver 702. The support for WS groups in not availa...
/IWBEP/CM_MGW_BOP_DT163 WS BOP generated
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_BOP_DT166 No Authorization to delete Backend Operation Proxy classes
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_BOP_RT000 Backend Operation Proxy (BOP) with ID '&1' does not exist
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.