If an expense ticket says Yes on Has this ticket
been applied to an invoice, this indicates that the ticket has
already been applied to a customer invoice. You can only apply an expense ticket once to customer invoices. After the ticket has been
applied to a sales invoice, you cannot apply the ticket again.
Note: If you delete
a line item that references an applied ticket in the sales invoice, the
ticket will still indicate that it has been used in Sales/Invoicing. You
will not be able to apply it to another invoice. To keep your ticket transactions
consistent with your sales invoices, you should delete the entire invoice
and re-create it, omitting the line that you want to delete. Tickets marked Has this ticket been applied to an invoice
cannot be deleted. To remove the used ticket, you must purge
the ticket.
Tip: If you delete
an invoice created from time and/or expense tickets, then all time and
expense tickets applied to this invoice will no longer be marked as Has this ticket been applied to an invoice. You
can apply these tickets to a new sales invoice.