- DELETE
/sales/proforma-invoices/{invoice_id}/payments - GET
/sales/proforma-invoices/{invoice_id}/payments - POST
/sales/proforma-invoices/{invoice_id}/payments - DELETE
/sales/proforma-invoices/{invoice_id}/payments/{id} - GET
/sales/proforma-invoices/{invoice_id}/payments/{id} - PUT
/sales/proforma-invoices/{invoice_id}/payments/{id} - POST
/sales/proforma-invoices/{invoice_id}/payments/recalc