What causes this error?
The Bridge is unable to establish communication to the UTG via the assigned SSL\TLS secure channel certificate.
Attempting a Token Exchange before establishing a SSL\TLS certificate in the UTG API interface settings.
How do I resolve this error?
You will need to generate a new SSL\TLS certificate for use with the Shift4 Bridge and UTG to communicate and allow the token exchange.
See, the Generating a SSL\TLS certificate for use with Shift4 Bridge and Micros article for more information.