To prevent a particular cloud application from being able to access resources in AS ABAP, delete the respective OAuth 2.0 client ID. Proceed as follows:
Procedure
Start the OAuth 2.0 administration by calling transaction SOAUTH2.
Choose Delete.
Confirm the popup.
Results
You have removed the respective OAuth 2.0 client from the list of client IDs. The corresponding cloud application is no longer able to access resources in the AS ABAP.