> 🚧 Credit Card vs Check > > Transactions require either a credit card or a check, but **not both**. # Properties

Property	Type	Description	Example
`id`	`Number`(integer)	A read-only unique identifier.	`1234567890`
`amount`*	`Number`(float)	Required amount in dollars. Must be `0` or greater. Dual Pricing / Surcharge fees will automatically be added if surcharging is enabled on merchant's account. Do not include surcharge fees in this amount.	`1.07`
`gratuity`	`Number`(float)	Optional tip/gratuitiy amount. For Tip Adjust, include `estimate`: true	`.50`
`estimate`	`Boolean`	The amount being authorized is an estimate and can be increased later.	`true`,`false`
`fees`	`Array`(of [Fee objects](https://paidyet.readme.io/reference/fees))	These fees will be added to the total amount charged on the card. Do not add dual pricing / surcharge fees here.	See [Fee Example](https://paidyet.readme.io/reference/fees#example)
`input_method`	`String`	`"chip"`, `"swipe"`, `"keyed" **This is a response field only and is not passed in to the API.	`"chip"`
`type`	`String`	Optional. If omitted and amount is `0`, defaults to `"auth"`. If omitted and amount is greater than `0`, defaults to `"sale"`.	`"auth"`
`status`	`String`	Approved, Declined, Error * * This is a response field only and is not passed in to the API.	`"approved"`
`custom_fields`	`Array`(of [Custom Field objects](https://paidyet.readme.io/reference/custom-field))	Custom Fields associated to the transaction.	See [Custom Field Example](https://paidyet.readme.io/reference/custom-field#example)
`source`	`String`	api, etc.	`"api"`
`avs_result`	`Boolean`	The AVS result. ** This is a response field only and is not passed in to the API.	`true`
`ip`	`String`	Read-only IP address.	`"127.0.0.1"`
`ip_address`	`String`	Cardholder IP address. This field is sent in to the PaidYET API and is used in the PaidYET fraud prevention tools. This is a recommended field.	`"35.1.2.3"`
`billing_address`	`Object`([Address object](https://paidyet.readme.io/reference/address))	The billing address for the transaction.	See [Address Example](https://paidyet.readme.io/reference/address#example)
`email`	`String`(email format)	The customer's email address.	`"first.last@test.test"`
`phone`	`String`	The Customer's phone number for SMS receipt	"555-555-5555"
`schedule`	`Object`([Schedule object](https://paidyet.readme.io/reference/schedule))	The Schedule for the transaction.	See [Schedule Example](https://paidyet.readme.io/reference/schedule#example)
`date_created`	`String`(YYYY-MM-DD HH:MM:SS) in UTC	Read-only datetime.	`"2023-01-01 05:06:07"`
`customer`	`Object`([Customer object](https://paidyet.readme.io/reference/customer))	The customer associated to the transaction. Customer's are stored in a merchant's Customer database.	See [Customer Example](https://paidyet.readme.io/reference/customer#example)
`order_id`	`String`	The Order ID.	`"1234567890"`
`invoice`	`String`	Optional invoice number.	`"1234567890"`
`purchase_order_number`	`String`	Optional PO number. (max 17 characters)	`"1234567890"`
`comments`	`String`	Optional comments about the transaction.	`"A comment about the transaction."`
`error`	`String`	Read-only. Contains the response code and authorization response message for the transaction. The format of the string is not guaranteed. Please see the [REST API guide](https://paidyet.readme.io/docs/rest-api#response-codes) for more details. **This is a response field only and is not passed in to the API.	`"N7: CVV2 MISMATCH"`
`result`	`String`	The result of the transaction.	`"OK"`
`lodging`	`Object`([Lodging object](https://paidyet.readme.io/reference/lodging))	The lodging information associated with the transaction.	See [Lodging Example](https://paidyet.readme.io/reference/lodging#example)
`batch`	`Object`([Batch object](https://paidyet.readme.io/reference/batch))	The batch to which the transaction is associated.	See [Batch Example](https://paidyet.readme.io/reference/batch#example)
`send_receipt`	`Boolean`	If `true`, a receipt will be sent to the customer's email address.	`true`
`external_id`	`String`	Unique identifier used to look up customer. This is not generated by PaidYET.	`"1234567890"`
`credit_card`**	`Object`([Credit Card object](https://paidyet.readme.io/reference/credit-card))	The card associated to the transaction.	See [Credit Card Examples](https://paidyet.readme.io/reference/credit-card#examples)
`check`**	`Object`([Check object](https://paidyet.readme.io/reference/check))	The check associated to the transaction.	See [Check Example](https://paidyet.readme.io/reference/check#example)
`emv_data`**	`String`	Collection of BER-TLV objects for EMV transactions. Please see the EMV Transaction guide for more information.	`"5F2A0208405F30020701..."`

## Requirements *Required for all Transactions, optional when `type` is `"capture"`. ****Only one** of these items can be sent in the transaction, **not multiple**. **This is a response field only and is not passed in to the API. # Examples > 📘 Not all properties are required > > With the following examples, many of the properties shown are not required. Most of them should be specified only if needed except as noted in the [Requirements](https://paidyet.readme.io/reference/transaction#requirements). ## Sample Request - With a Credit Card ```json { "credit_card": { "billing_address": { "address": "1234 Test Street S.", "city": "Test City", "state": "CA", "postal": 50001 }, "number": "4000100011112224", "external_id": "1234567890", "name": "Firstname M Lastname", "email": "firstname.lastname@test.test", "description": "This is an example card." }, "billing_address": { "address": "1234 Test Street S.", "city": "Test City", "state": "CA", "postal": 50001 }, "amount": 1.07, "type": "sale", "custom_fields": [ { "key": "shoesize", "value": "9" } ], "email": "firstname.lastname@test.test", "order_id": "1234567890", "invoice": "1234567890", "purchase_order_number": "1234567890", "comments": "A comment about the transaction.", "send_receipt": true, "external_id": "1234567890" } ```
## Sample Response- With a Credit Card ```json { "credit_card": { "billing_address": { "address": "1234 Test Street S.", "city": "Test City", "state": "CA", "postal": 50001 }, "token": "abcd1234", "bin": 516693, "last4": "XXXXXXXXXXXX1111", "external_id": "1234567890", "type": "MasterCard", "name": "Firstname M Lastname", "email": "firstname.lastname@test.test", "description": "This is an example card.", "funding": "credit", "product_segment": "all", "product_name": "Visa Classic", "issuing_country": "US", "issuer": "Visa" }, "billing_address": { "address": "1234 Test Street S.", "city": "Test City", "state": "CA", "postal": 50001 }, "batch": { "date_opened": "2023-01-01 05:06:07", "date_closed": "2023-01-01 05:06:07", "external_id": "1234567890" }, "amount": 1.07, "input_method": "api", "type": "sale", "custom_fields": [ { "key": "shoesize", "value": "9" } ], "source": "api", "avs_result": "M", "email": "firstname.lastname@test.test", "order_id": "1234567890", "invoice": "1234567890", "purchase_order_number": "1234567890", "comments": "A comment about the transaction.", "result": "OK", "send_receipt": true, "external_id": "1234567890" } ```
## Sample Request- With a Check ```json { "check": { "account": "111111", "routing": "999999992", "accountholder": "Firstname Lastname", "external_id": "1234567890" }, "billing_address": { "address": "1234 Test Street S.", "city": "Test City", "state": "CA", "postal": 50001 }, "amount": 1.07, "custom_fields": [ { "key": "shoesize", "value": "9" } ], "email": "firstname.lastname@test.test", "order_id": "1234567890", "invoice": "1234567890", "purchase_order_number": "1234567890", "comments": "A comment about the transaction.", } ```
## Sample Request- With EMV Data ```json { "emv_data": "5F2A0208405F30020701", "billing_address": { "address": "1234 Test Street S.", "city": "Test City", "state": "CA", "postal": 50001 }, "amount": 1.07, "custom_fields": [ { "key": "shoesize", "value": "9" } ], "email": "firstname.lastname@test.test", "order_id": "1234567890", "invoice": "1234567890", "purchase_order_number": "1234567890", "comments": "A comment about the transaction.", } ```