While attempting to schedule Migrations from the HCX Cloud Manager web interface, the migration wizard displays the message: "No registered connections found."
HCX
This is an expected behavior documented in the HCX User Guide
Workaround:
To schedule migrations from Cloud to Connector (On-Prem), the option "Reverse Migrations" should be checked in the Migration Wizard at the HCX Connector so the system can display resources on the Cloud side.