Request For Information (RFIs)

Requests for Information (RFIs) are structured requests Nium raises when additional information is needed to progress an onboarding step, a transaction, a refund, or any other action.

The RFI Flow v5 provides a single unified integration for handling all RFI types — one set of webhooks, one set of APIs, one contract.

RFI v5 Flow: Overview — concepts, lifecycle, question types, and the end-to-end flow
Building Your RFI Form — how to render each question type and a complete integration walkthrough
RFI API Reference — full API specification

LLM-ready documentation:: llms.txt and llms-full.txt