Interface Invoice

interface Invoice {
    access_log: string;
    accounting: string;
    acct_date: DateContainer;
    approval_status?: "S" | "A" | "R" | "O";
    approved: DateContainer;
    attachmentid: string;
    balance: number;
    contactid: string;
    created: DateContainer;
    credit: number;
    credit_reason: string;
    credit_rebill_status?: "R" | "C";
    currency: string;
    customerid: string;
    date: DateContainer;
    draw: number;
    draw_date: DateContainer;
    emailed: DateContainer;
    externalid: string;
    id: string;
    invoice_layoutid: string;
    notes: string;
    number: string;
    oa_invoice_short_url__c: string;
    original_invoiceid: string;
    paperrequest: DateContainer;
    papersend: DateContainer;
    payment_termsid: string;
    shipping_contactid: string;
    status: string;
    submitted: DateContainer;
    tax: number;
    tax_federal: number;
    tax_gst: number;
    tax_hst: number;
    tax_pst: number;
    tax_state: number;
    terms: string;
    total: number;
    updated: DateContainer;
}