System Integrator API

For ERP/accounting software vendors and integration partners onboarding and managing taxpayers on their behalf, setting up ERP connections, and generating Invoice Reference Numbers (IRNs).

Base path: /v1/system-integrators

All endpoints require an x-api-key header with your System Integrator API key — see Authentication. Every taxpayer you create or manage through this API is automatically scoped to your System Integrator account.

Responses follow the shared envelope described in Errors & Response Format.