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# Input Parameters

The Subscribe SOAP API requires input parameters to be entered in the order shown, and must be place-marked if not specified.

For example, if you wish to use the `Account.makePayment` method to enter a payment against an `Account`, and you wish to add a `note` without specifying the `invoiceId` or `overageDisposition`, you must enter null for those two parameters.

(See the [Account.makePayment](Account_makePayment) method for details.)

To enter a payment of \$37 against an `Account`, call

```

Account->makePayment($acct, 
$paymentMethod, 37, USD, null, null, "note")
```

Calling

```

Account->makePayment($acct, $paymentMethod, 37, USD, "note") 
```

would result in a payment applied to `invoiceId` "note," with no note included, which is, most likely, an invalid call.

**Parent topic:**[Subscribe API Overview](../topics/Subscribe_API_Overview_1)


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