How do I submit an invoice that includes advanced payment or credit

If your invoice has advanced payment, for example below:

Advanced payment: 500-

Fees: 1000

Expenses: 100

Tax: 0

Gross Total: 600

This would be entered into Brightflag with the advanced payment deducted from the fees:

Fees: 500

Expenses: 100

Tax: 0

Gross Total: 600

Note: Discounts and advanced payments should not be used interchangeably. If you are unsure about submissions, please open a ticket with support.