Retrieves a list of transactions with pending Travel Rule Requests for Information (RFIs) requiring contact information.

Each RFI carries:

• externalId — the RFI ID, used as the path parameter on assign-contact.

• flowType — CHANNEL_PAYMENT or PAYIN.

• flowId — the held payment's uuid.

When flowType is CHANNEL_PAYMENT, this is the channel payment ID (uuid from the channel webhook / GET /api/v2/channel/{channelId}/payments).

When flowType is PAYIN, this is the Payment Link payment ID (uuid from the checkout webhook / Payment Link create response).Call this endpoint on every transaction-held webhook delivery to determine whether the hold is Travel Rule (an RFI exists for the payment's uuid) or KYT (no matching RFI).