DLP DIM policy shows rest action requested and is not blocking upload

Products

• CASB Gateway Advanced
• CASB Gateway
• CASB Security Advanced IAAS
• CASB Security Standard
• CASB Security Premium
• Data Loss Prevention Cloud Detection Service
• Data Loss Prevention Cloud Detection Service for REST
• Data Loss Prevention Cloud Package

Issue/Introduction

DLP policy is configured to block upload and the upload has triggered the DLP incident, but it shows "Rest action requested". The file could be uploaded without being blocked by CASB GW. 

Cause

This could be an application detection configuration (scan filter) syncing issue.

Resolution

Manually sync the application detection configuration.

Additional Information

This issue can also occur when the response rule being called is not permitted. For more details on that, please see Data-in-Motion Response Rules are not working for your Cloud Detection Service for CASB (broadcom.com).