BILLING_INVOICE_PAID

{
  "event":       "BILLING_INVOICE_PAID",
  "eventId":     "EVTJHLTPQH45SAP",
  "businessId":  "BUS1A2B3C4D5E6F",
  "environment": "LIVE",
  "timestamp":   "2026-05-26T14:13:26Z",
  "data": {
    "invoiceId":     "INVTEST000001AB",
    "invoiceNumber": "INV-2026-TEST-001",
    "amount":        50.00,
    "paid":          50.00,
    "currency":      "USD",
    "paymentMethod": "CRYPTO",
    "txHash":        "a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0c1d2e3f4a5b6c7d8e9f0a1b2",
    "network":       "TRON"
  }
}

{}

WEBHOOK

{
  "event":       "BILLING_INVOICE_PAID",
  "eventId":     "EVTJHLTPQH45SAP",
  "businessId":  "BUS1A2B3C4D5E6F",
  "environment": "LIVE",
  "timestamp":   "2026-05-26T14:13:26Z",
  "data": {
    "invoiceId":     "INVTEST000001AB",
    "invoiceNumber": "INV-2026-TEST-001",
    "amount":        50.00,
    "paid":          50.00,
    "currency":      "USD",
    "paymentMethod": "CRYPTO",
    "txHash":        "a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0c1d2e3f4a5b6c7d8e9f0a1b2",
    "network":       "TRON"
  }
}

{}

Fires when a crypto deposit fully covers a pending invoice. The invoice status moves to PAID and — if it was a setup invoice — your program is activated.

Event Type

BILLING_INVOICE_PAID

Payload

{
  "event":       "BILLING_INVOICE_PAID",
  "eventId":     "EVTJHLTPQH45SAP",
  "businessId":  "BUS1A2B3C4D5E6F",
  "environment": "LIVE",
  "timestamp":   "2026-05-26T14:13:26Z",
  "data": {
    "invoiceId":     "INVTEST000001AB",
    "invoiceNumber": "INV-2026-TEST-001",
    "amount":        50.00,
    "paid":          50.00,
    "currency":      "USD",
    "paymentMethod": "CRYPTO",
    "txHash":        "a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0c1d2e3f4a5b6c7d8e9f0a1b2",
    "network":       "TRON"
  }
}

Payload Fields

Field	Type	Description
`invoiceId`	string	Unique invoice identifier
`invoiceNumber`	string	Human-readable invoice number
`amount`	number	Original invoice amount in dollars
`paid`	number	Amount actually applied to this invoice, in dollars
`currency`	string	Currency code (always `USD`)
`paymentMethod`	string	Always `CRYPTO` for on-chain payments
`txHash`	string	Blockchain transaction hash of the deposit
`network`	string	Blockchain network — `TRON` or `ETH`

For the full event group documentation see Billing Events.

{
  "event":       "BILLING_INVOICE_PAID",
  "eventId":     "EVTJHLTPQH45SAP",
  "businessId":  "BUS1A2B3C4D5E6F",
  "environment": "LIVE",
  "timestamp":   "2026-05-26T14:13:26Z",
  "data": {
    "invoiceId":     "INVTEST000001AB",
    "invoiceNumber": "INV-2026-TEST-001",
    "amount":        50.00,
    "paid":          50.00,
    "currency":      "USD",
    "paymentMethod": "CRYPTO",
    "txHash":        "a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0c1d2e3f4a5b6c7d8e9f0a1b2",
    "network":       "TRON"
  }
}

{}

Authorizations

Authorization

string

header

required

API key from the FYATU CaaS portal. Pass as Authorization: Bearer <key>.

Body

application/json

event

string

Example:

"BILLING_INVOICE_PAID"

eventId

string

businessId

string

environment

enum<string>

Available options:

LIVE,

SANDBOX

timestamp

string<date-time>

data

object

Response

200

Acknowledge the event.

Guides

JIT Authorization

Card Events

Transaction Events

Cardholder Events

Account Events

Billing Events

Event Type

Payload

Payload Fields

Authorizations

Body

Response

​Event Type

​Payload

​Payload Fields

Authorizations

Body

Response

Event Type

Payload

Payload Fields