For contract invoices only.

If this is an Invoice transaction, specify the number of units being billed for this item.

If this is an Adjustment transaction, specify the number of units to bill or credit for this item. If the adjustment is negative, you must enter the units as a negative (–) amount.

If this is a Credit Memo or Write-Off transaction, specify the number of units to credit for this item. The system automatically assumes the amount to be negative, so do not enter as a negative value.