patch https://api.maroo.us/v1/invoices/
With this endpoint, you can perform a partial invoice update by specifying only the field(s) you intend to modify.
The paymentSchedule property expects a payment schedule to replace the previous one, meaning you should provide a new payment schedule which includes the payments you want to keep, new ones you want to add; do not include the payments you want to deleted in the new payment schedule. Complete payments cannot be edited or removed.
Once any payment of the invoice is complete the contact cannot be updated.
See the "Examples" section for more details.