In the top left you will see one of four status'. Draft, Approved, Issued or Paid. Please see the Invoice Browser for a more in depth explanation of these status'.
Current invoice approvals
Shows a summary of the approval status for finance, project manager and management. You will not be able to issue this invoice until all three are checked. A checkbox may be disabled if:
These settings affect how the printable invoice is rendered and when the invoice hits your accounting system.