Billing in Arrears - Prorate

CSP Portal currently doesn't support the combination of Billing in Arrears & Prorate enabled

Main quantity stays at 12 and is updated at the end of the month to 13. Temporary prorate item of 1 is added immediately.

At the end of the month, the customer is billed for their actual usage of the month that’s been (billing in arrears)
On the 10th of the month, the licenses are increased in Dicker Data from 12 to 13 licenses
The main quantity on the customer's agreement/contract stays at 12
A temporary prorate addition of 1 is added to the agreement immediately, with an effective date of the 10th, and a cancelled date of the end of the month
At the end of the month, we bill the customer for the 12 licenses they consumed, plus the partial 1 license they consumed between the May 10th - 31st
The main quantity on the customer's agreement/contract updates to 13 at the end of the month

Main quantity stays at 12, then it is updated at the end of the month to 11. Temporary prorate item of -1 is added immediately.

At the end of the month, the customer is billed for their actual usage of the month that’s been (billing in arrears)
On the 20th of the month, the licenses are increased in Dicker Data from 12 to 11 licenses
The main quantity on the customer's agreement/contract stays at 12
A temporary prorate reduction of -1 is added to the agreement immediately, with an effective date of the 20th, and a cancelled date of the end of the month
At the end of the month, we bill the customer for the 12 licenses they consumed for May, and credit for the 1 license they partially used
The main quantity on the customer's agreement/contract updates to 11 at the end of the month