Can you explain ECM “CU”?
In general you can have no users if you’re just using it as attachment storage for Epicor ERP and do not care t view inside ECM. We have only 1 AP user right now, but it’s based on # documents scanned and the Integration, not seat as I recall. I can check next week when I’m back in the office.
As for Saas and connect to OP - yes, all the connections between DS and ERP are REST/API connections.
We are On-Prem so I have no idea about the lag time/performance of the hosted ECM platform. I do believe that the AP Automation only works on-prem - double check me on that as it’s been a year+ since I asked about it - so you would at least have to have the IDC server as on-prem, but the ECM server could be hosted. Again, the interface between ER and ECM is so very lightweight that the data exchange would be very quick and I suspect the only issue would be the image transfer - size = time.