one-time, recurring, and usage-based Professional Services

We bill certain customer services upfront on a annual billing basis. These hours are use it or lose it basis for the billed period Example 20 hours billed for 01.01.2022 - 12.31.2022

These hours need to be tracked as consumed and any overage above 20 hours need to be billed at an agreed upon rate. Checking to see if anyone has come across the Same Billing solutions

we are on S4 Hana on premise 1809