https://www.zoho.com/ca/billing/kb/advanced-billing/enable-both.html
Can I enable both Advance Invoice and Advance Payment Requests? | FAQ | Zoho Billing
Learn if you can enable both Advance Invoice and Advance Payment Requests
invoice and payment
https://apps.odoo.com/apps/modules/11.0/bi_manual_currency_exchange_rate_invoice_payment
Currency Exchange Rate on Invoice and Payment | Odoo Apps Store
currency exchange rateinvoice and paymentodoo appsstore