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Note that all events for which the conditions apply will be sent. And since the events are sent asynchronously it is, for example, possible to receive invoice_closed before invoice_created for the same invoice. Webhooks may be delivered more than once, so make sure their processing is idempotent. Every webhook event has a unique ID that can be used to track whether the event has already been received.

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Importing an invoice

  • When the invoice is imported for the first time
    • invoice_created
  • When the open amount is changed
    • invoice_payment_created
  • When the open amount is changed to zero
    • invoice_paid
    • When the invoice was already sent to the debtor
      • invoice_closed
    • When the invoice is part of a debt collection case and the principal amount and costs of the debt collection case have been fully paid
      • case_paid
    • When the invoice is part of a debt collection case and the principal amount has been fully paid, but not yet all of the additional costs
      • case_invoice_amount_paid
  • When the open amount is changed from zero
    • invoice_reopened
  • When the open administration costs are changed
    • invoice_payment_created
  • When the open interest costs are changed
    • invoice_payment_created
  • When the open debt-collection costs are changed
    • invoice_payment_created
  • When the sum of the open amounts of the debtor exceeds the credit-limit
    • credit_limit_exceeded

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Creating a debt collection case

  • case_created
  • For each invoice in the debt collection case that has open administration costs, these costs are credited
    • invoice_payment_created
  • For each invoice in the debt collection case interest costs are added, if applicable
    • invoice_payment_created
  • For the oldest invoice in the debt collection case debt collection costs are added
    • invoice_payment_created

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Registering a payment/remission of the costs on the debt collection case

Payments are always final and cannot be changed or deleted. When a payment is reverted by a user, a new payment is created that is the inverse of the original.
  • For each invoice in the debt collection case that has open debt-collection costs
    • invoice_payment_created
  • For each invoice in the debt collection case that has open interest costs
    • invoice_payment_created

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Registering a payment/remission for the administration costs on an invoice

Payments are always final and cannot be changed or deleted. When a payment is reverted by a user, a new payment is created that is the inverse of the original.
  • invoice_payment_created

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Performing a step for an invoice

  • invoice_step_performed
  • When the invoice is marked for debt collection
    • invoice_to_debt_collection
  • When administration costs are added to the invoice
    • invoice_payment_created

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Sending a bundled reminder

  • bundled_reminder_sent
  • When administration costs are added to the bundled reminder
    • administration costs are added to the oldest invoice that triggered the bundled reminder
      • invoice_payment_created
    • administration costs are removed from all other invoices included in the bundled reminder
      • invoice_payment_created
Last modified on June 18, 2026