Schedule a one-off Direct Debit collection

Schedules a one-off Bacs collection against an active mandate for an invoice or payment link. BACS is not real-time: the collection settles 3–5 working days after submission, the payer receives the regulatory advance notice first, and nothing is marked paid until the bureau confirms collection. Idempotent per source: retrying with the same sourceId returns the existing schedule instead of collecting twice.

Related endpoints

• POST /mandates — Create a Direct Debit mandate
• GET /mandates — List Direct Debit mandates
• GET /mandates/{id} — Retrieve a Direct Debit mandate
• POST /mandates/{id}/cancel — Cancel a Direct Debit mandate
• POST /mandates/{id}/suspend — Suspend a Direct Debit mandate
• POST /mandates/{id}/reinstate — Reinstate a suspended Direct Debit mandate

Common errors

• 400 invalid_request — malformed payload or failed validation.
• 401 unauthenticated — missing, malformed, or revoked API key.
• 403 permission_denied — key lacks the required scope, or the resource belongs to a different merchant.
• 404 resource_missing — the referenced resource does not exist or is not visible to your key.
• 409 conflict — Idempotency-Key collision with a different body, or a concurrent state-transition conflict.
• 422 unprocessable_entity — business-rule failure (for example, refunding more than the original charge).

Idempotency

Pass an Idempotency-Key header (UUID v4 recommended) to make retries safe. Keys are valid for 24 hours; see the idempotency guide.

curl -X POST "https://api.revkeen.com/v2/mandates/string/collections" \  -H "x-api-key: $REVKEEN_API_KEY" \  -H "Content-Type: application/json" \  -d '{    "amountMinor": 2500,    "currency": "GBP",    "sourceType": "invoice",    "sourceId": "00000000-0000-0000-0000-000000000000",    "requestedCollectionDate": "2026-07-01"  }'

{
  "data": {
    "id": "string",
    "mandate_id": "string",
    "lz_schedule_id": "string",
    "amount_minor": 0,
    "currency": "GBP",
    "source_type": "string",
    "source_id": "string",
    "status": "scheduled",
    "collection_date": "string",
    "notice_date": "string",
    "submission_date": "string",
    "already_scheduled": true
  }
}

{
  "data": {
    "id": "string",
    "mandate_id": "string",
    "lz_schedule_id": "string",
    "amount_minor": 0,
    "currency": "GBP",
    "source_type": "string",
    "source_id": "string",
    "status": "scheduled",
    "collection_date": "string",
    "notice_date": "string",
    "submission_date": "string",
    "already_scheduled": true
  }
}