I'm getting an error when I try use a VCO workflow from custom resource. Has anyone seen this issue before? I can connect to the URL manually.
Are you using the built in VCO or a separate appliance?
It looks that you do not have a connection to the configured vCO. Log in as tenant administrator, go to Administration -> Advanced Services -> Server Configuration and check the response message on Test Connection.
Make sure you have configured the ASD "endpoints" (vCO Pluggins) if you are using embedded vCO.