Hey Pirozhkov,
Many thanks for reaching out to us!
If you've already configured a base fee for the metered plan, then you would just need to include only the additional usage based charges using either "Add charge item to pending invoice" or "Add addon item to pending invoice" APIs. For example, if the plan base amount is $100 {which is charged during sign up}, and usage charges is $40, you would need to add overage alone to the pending invoice that gets generated on renewal.
Please let me know if you need any clarification.
Hey Pirozhkov,
Yes. That's right.
I've provided a suggestion to the use case in your other forum post. Please find it below:
Hey Pirozhkov,
Implementing such subscription models is a priority feature in our product roadmap, and I've tagged this to our feature request list to step up its priority. Though we do not have an exact timeframe on when this would be made available, we will certainly reach out to you once it is rolled out.
Vlad Pirozhkov
Hi, documentation says
So should we subtract included base limit from actual usage and send the resulting surplus to Chargebee via API or such threshold can be configured in subscription/add-on and we can send total usage and threshold will be subtracted automatically.
Thanks.