Grade passback from D2L to SIS (non-Banner)

Diana.L.840

I understand that IPSIS supports Banner as one of the integration types for Gradebook. We are not a Banner institution, but we are exploring the possibility of building a middle layer that mimics Banner’s API structure and behavior.
Given that, I have a few questions:

1. Can IPSIS Gradebook be configured to use the ‘Banner’ integration type if the endpoints and payloads it interacts with match what Banner would typically provide?
2. Are there any known technical constraints that would prevent IPSIS from working with a custom integration layer designed to push grades from D2L to a non-Banner SIS?

I’d appreciate any guidance or documentation you can provide on the feasibility of using a custom API to support a ‘Banner-type’ integration path.