Explanation of Error Types

Double invoicing
Service has already been charged on a previous invoice.

Wrong rates
Service has been charged with the wrong rate.

Wrong quantity/time
Quantity relating to the service should be more/less than charged on the invoice

Wrong VAT code
Invoice has been issued using the wrong VAT code.

Wrong customer
Service on the invoice has been charged to the wrong customer

Wrong Customer Details
Some of the customer details on the invoice are incorrect

Wrong service description
Service description included on the invoice is incorrect