There is no simple way to get the results of an account schedule from the API.

It can be done by adding up the GL entries and then doing the calculations from the raw entries.

But this requires maintenance of the account schedule in Dynamics and then a separate version outside of Dynamics that mirrors the layout and summary lines.

It can be done with KPI's as well, but then the data is only as reliable as the last refresh of the KPI's.

Providing an API that provides access to the data in an account schedule on demand would eliminate this.