Virtual Accounts

Issue fixed virtual accounts per customer reference_id.

• Stay active for inbound bank transfers
• Settle to the merchant balance (VA holds no float)
• Reuse the same reference_id for create, update, and read

Endpoints

• POST Generate Virtual Account — /api/m1/generate-va
• POST Update Virtual Account — /api/m1/update-va
• GET Get Virtual Account — /api/m1/get-vac?reference_id=12345678097
• GET Get VA Transaction — /api/m1/va-transaction?reference=DVA-999357240831142552459563784150