Other
Invoiced with incorrect prices (Reprice button)
Difference invoice created when need single invoice for full Enrolment (Reverse & Reinvoice button)
Single invoice for full Enrolment generated when need difference invoice for additional booking.
When any previous invoices on the Enrolment were credited with an additional booking added, and the whole Enrolment invoiced, rather than just a difference invoice for the additional booking (Reprice Button then Partial Invoice)