Paydeca

Connect H2H Merchant account in Corefy Dashboard

Step 1 - Open connection form

Open Paydeca in the provider directory and press Connect at Paydeca Provider Overview page in the New connection section. Choose H2H Merchant account.

Step 2 - Fill in fields and select settings

• Merchant ID
• Secret Key
• Test Mode -> (enable if you are using sandbox credentials)

Choose Currency / Features; check with your Corefy account manager which are enabled for your account.

First request to Corefy API (MIN)

What it does: creates a payment-invoice; card data itself is collected and submitted separately by Corefy's checkout/SDK layer, not as part of this request. Paydeca runs full 3D Secure 2 - a browser fingerprint is automatically collected and sent along with the sale, and Paydeca may return a 3D Secure challenge redirect depending on the card.

Payment - MIN

POST /api/payment-invoices

{
  "data": {
    "type": "payment-invoice",
    "attributes": {
      "reference_id": "8e3dbbb0-17af-4c9a-bedb-93bdac6900a2",
      "service": "payment_card_usd_hpp",
      "currency": "USD",
      "amount": 10
    }
  }
}

This connector also supports EUR.

Payment - MAX

POST /api/payment-invoices

{
  "data": {
    "type": "payment-invoice",
    "attributes": {
      "reference_id": "6795502c-e27d-4d07-85e0-93245aab9a3f",
      "service": "payment_card_usd_hpp",
      "currency": "USD",
      "amount": 10,
      "customer": {
        "reference_id": "cus_123",
        "first_name": "John",
        "last_name": "Smith",
        "email": "johnsmith@gmail.com",
        "phone": "15551234567",
        "date_of_birth": "1990-01-01",
        "address": {
          "country": "US",
          "region": "NY",
          "city": "New York",
          "full_address": "1 Main street",
          "post_code": "10001"
        }
      }
    }
  }
}

customer is entirely optional - anything you don't send falls back to the Constants below.

Extended request (MAX)

Why add extra fields (typical reasons): - Provide additional customer details for compliance/reconciliation - Positively influence conversion rate - Include optional fields required by your specific flow

Constants (fallback fields)

Constants are static values that Corefy can send to the provider instead of dynamic data from your API request, when those fields are missing in the request.

Priority (predictable rule): 1. If a value is present in the request -> Corefy uses the request value 2. Else if the constant is set -> Corefy uses the constant 3. Else -> provider may reject the request or apply its defaults (depends on provider)

Currently available constants (constant -> Corefy API field)

• first_name -> customer.first_name
• last_name -> customer.last_name
• date_of_birth -> customer.date_of_birth
• email -> customer.email
• phone -> customer.phone
• full_address -> customer.address.full_address
• city -> customer.address.city
• region -> customer.address.region
• post_code -> customer.address.post_code
• country -> customer.address.country

Refunds

Paydeca supports full refunds only (no partial refunds, one refund per payment).