{
  "operation_id": "7e8a9b0c-1d2e-3f4a-5b6c-7d8e9f0a1b2c",
  "provider_id": "BNK-OP-90213",
  "status": "pending",
  "idempotency_key": "platform:9b1deb4d:acme-payment-0071",
  "data": {
    "type": "WITHDRAW",
    "paymentType": "SEPA_CT"
  },
  "idempotency_hit": true
}

{
  "operation_id": "7e8a9b0c-1d2e-3f4a-5b6c-7d8e9f0a1b2c",
  "provider_id": "BNK-OP-90213",
  "status": "pending",
  "idempotency_key": "platform:9b1deb4d:acme-payment-0071",
  "data": {
    "type": "WITHDRAW",
    "paymentType": "SEPA_CT"
  },
  "banking_fee": "2.000000"
}

{
  "error": "idempotency_key_required",
  "message": "provide idempotency_key (body or Idempotency-Key header)"
}

{
  "error": "unauthorized",
  "message": "invalid or missing credentials"
}

{
  "error": "insufficient_funds",
  "message": "account balance is not enough for this operation"
}

{
  "error": "no_banking_customer",
  "message": "create your banking customer first (POST /v1/banking/customer)"
}

{
  "error": {
    "code": "banking_request_failed",
    "message": "request rejected"
  }
}