1. Retrieve the PaySimple Customer Id stored in your system. If you don't have customer ids stored yet, you can call list customers.

2a. If you are using an existing Credit Card or ACH Account, and do not have the Id stored in your system, you can look it up the default card or default ach account for the customer.

2b. If the account object does not exist for your customer, add the ACH Bank Account or Credit Card Account.

3. Collect a payment using the account id from step 2.