Recurring transactions not available in DI API?

Hi everyone,

We need to process about 20.000 recurring invoices per month.

Using the UI for this (Recurring Transactions) is not possible because of performance concerns.

That's why we want to do this through the DI API. Is there a service available for the Recurring Transactions, and an object for the Recurring Transactions Template? If so, were is this documented?

Thank you in advance!