The unique invoice number set by the supplier
invoic_Examples
<invoice text="Btwentyfour Example Invoice" environment="Production" type="Debit" invoiceDate="2015-10-10" invoiceNumber="95159" currency="SEK" messageId="237356" messageDate="2020-08-25T12:19:05.167Z"> invoic_XPATH
/b24Message/invoice/@invoiceNumber
invoic_Required
Yes
invoic_Type
Text
invoic_Sort
1600