When trying to register a new DLP Cloud Detection Server as an External Appliance in the CASB server, the error appears despite having a non-expired, unique token for the purpose.
"DLP should be enabled when activating DLP appliance."
It's hard to notice sometimes, but there is a button to "enable" the appliance, prior to registration and activation.
Use the option to Enable the appliance, then use the drop-down menu under "Actions" to Connect and Activate the appliance.
You receive an error using a token to connect your DLP Cloud Detector to CASB (broadcom.com)