Manage customer

Submit customer information within your payment.

Customer resource allows you to send information about the customer, like name and address together with your payment. Direct Debit Secured, Unzer Invoice, and Unzer Installment payment methods require customer resource. Customer resource can be stored for using with future payments, refunds, or reversals. In Unzer payment system, a customer resource can be created, fetched, updated and deleted.

Types of customers

There are three different customer types:

• B2C customer
• registered B2B customer
• not-registered B2B customer

Go to Manage customer (API) page to learn more about customer types.

Create a customer

To create a customer:

Request

Unzer unzer = new Unzer('s-priv-xxxxxxxxxx');
Customer customer = new Customer("Max", "Mustermann");
unzer.createCustomer(customer);

Unzer unzer = new Unzer('s-priv-xxxxxxxxxx');
Address billingAddress = new Address();
billingAddress.setName(name)
              .setStreet(street)
              .setCity(city)
              .setState(state)
              .setZip(zip)
              .setCountry(country);
       
Address shippingAddress = new Address();
shippingAddress.setName(name)
               .setStreet(street)
               .setCity(city)
               .setState(state)
               .setZip(zip)
               .setCountry(country);

CustomerCompanyData customerBusinessData = new CustomerCompanyData();
customerBusinessData.setCommercialRegisterNumber(registrationNumber);
customerBusinessData.setRegistrationType(CustomerCompanyData.RegistrationType.REGISTERED);

Customer customer = new Customer("Max", "Mustermann");
customer.setCustomerId(customerId)
        .setSalutation(salutation)
        .setEmail(eMail)
        .setMobile(mobile)
        .setBirthDate(birthdate)
        .setBillingAddress(billingAddress)
        .setShippingAddress(shippingAddress)
        .setCompanyData(customerBusinessData);
unzer.createCustomer(customer);

Response

A customer ID is generated that is later used for fetching transaction data related to the customer. The createCustomer method returns a customer object that contains the ID from the created customer resource. You can access the ID by calling the getId method of the customer object.

customer.getId();

Update customer details

If required, you can also update the customer details. But, the customer ID cannot be updated. To update customer details, call the updateCustomer method of the Unzer class.

Request

Unzer unzer = new Unzer('s-priv-xxxxxxxxxx');
Customer customer = unzer.fetchCustomer('s-cst-xxxxxxxxx');
Customer customerToUpdate = new Customer(customer.getFirstname(), customer.getLastname());
customerToUpdate.setFirstname("Max");

Customer updatedCustomer = unzer.updateCustomer(customer.getId(), customerToUpdate);

The customer ID once created, cannot be updated.

Fetch the customer to view the updated fields

Unzer unzer = new Unzer('s-priv-xxxxxxxxxx');
Customer customer = unzer.fetchCustomer('s-cst-xxxxxxxxx');

Delete a customer

You can delete a customer by calling the deleteCustomermethod with the customer ID.

Request

Unzer unzer = new Unzer('s-priv-xxxxxxxxxx');
Customer customer = unzer.deleteCustomer('s-cst-xxxxxxxxx');

When you fetch the customer with that customer ID, you will get an error that the customer does not exist. In the JAVA-SDK this will raise an UnzerApiException that needs to be handled.

Request

try {
    Unzer unzer = new Unzer('s-priv-xxxxxxxxxx');
    Customer customer = unzer.fetchCustomer('s-cst-xxxxxxxxx');
} catch (HttpCommunicationException e) {
    // API returned error resource.
    this.log(e->getClientMessage());
    this.log(e->getMerchantMessage());
}

Add a customer to a payment

You must link the customer resource to the payment when creating a charge or authorization. Simply add an already existing customer resource (see creating a customer) within the resources object in a payment. For example, during an authorize request:

Request

POST {{domain}}/v1/payments/authorize

Unzer unzer = new Unzer('s-priv-xxxxxxxxxx');
Authorization authorization = unzer.authorize(BigDecimal.valueOf(100.00), Currency.getInstance("EUR), "s-ppl-9wmri5mdlqps", "https://your.return.url", "s-cst-xxxxxxxxx");

You should now see the customerId in the payment response and after calling GET on said payment.

Response

String customerId = authorization.getCustomerId();

After you’ve linked a customer to a payment, the payment workflow will contain the customerId in the resources object, and it is not necessary to link the customer in following transactions.

• authorize > cancel authorize
• authorize > charge > shipment
• authorize > charge > cancel charge
• charge > shipment
• charge > cancel charge

Payment methods with mandatory customer resources

There are 3 different payment methods, which require you to link a customer resource during a payment. You need the customer resource during authorization and charge.

During a charge call:

• Unzer Direct Debit
• Unzer Invoice

During an authorize call:

• Unzer Installment

See also

• Charge a payment
• Customer API