Hello David,

Go to EMS and request access to Order-to-Cash in "Connectors" category. After having access you can investigate the data connection. Event if there's custom connector, you can always try to connect via API (https://docs.microsoft.com/en-us/dynamics-nav/enabling-apis-for-dynamics-nav)

It can be found here:

<your-celonis-link>/store/ui/connectors/594f8b5e-ab3d-420e-a7a7-795983021743

Best Regards,

Mateusz DUdek