# phone_number * Is optional * Type: `string` A field used to identify a phone number for a contact within the payment object. The `phone_number` field is a "soft" field. For more information, see [Soft fields](/products/payments-odl/api-docs/ripplenet/resources/standard-ripplenet-payment-object#soft-fields). ## JSON schema extract ```json "phone_number": { "type": "string", "description": "Code allocated to identify a contact phone number." } ```