How it occurred
If you check out a booking, but the invoice total is not correct, it could because a billed to agent extra was removed and added back.
For example, doing the following will cause this issue:
Add an extra to the booking and tick "Bill to agent"; and then
Invoice the agent; and then
Add additional extras to the booking; and then
Remove the bill to agent extra; and then
Add the bill to agent extra back again; and then
Check the booking out.
Because the billed to agent was added, removed and added again, Preno will add the extra to the final invoice that is generated.
The billed to agent extra should already be accounted for in the invoice that was created for the agent.
How to fix
To fix the issue, you will need to edit the invoice that was generated when the booking was checked out and remove the bill to agent extra that was added.
Click into the Xero invoice that was generated;
You will need to remove the payment before the Xero invoice will allow you to to remove the lines from the invoice. To do this; select the payment from the invoice and then select Options > Remove and Redo; then
Edit the invoice and remove the billed to agent extra; then
Save the invoice; and then
Apply the payment or allocate the prepayment back to the invoice.
