SAP Customer Checkout integration to FI-CA

Hello community, does anybody know, whether SAP customer checkout is also integrated to SAP FI-CA (RM-CA or FI-CAx)? I always see just the Business One integration? FI-CA provides some webservices for connecting external cash desks and I am wondering whether customer checkout works smoothely with those webservices in standard or is somehow directly connected.

Thank you very much for your help!