This can happen if partner changes the payer account for that customer associated to the billing rules at partner end. Billing rules are applied on the current configuration.
If you see this phenomenon, follow these steps:
- Verify if new payer account does not have data for that customer in history month they are applying the credits for.
- You can verify it by filtering the customer accounts within the partner tenant and change the category to Billing accounts.
For example, a customer is trying to apply credits for December but they changed payer account in January. This new payer account does not have any cost for December month. Below is how the reporting will be displayed:
A workaround is to request via Support Ticket for the CloudHealth engineering team to apply billing rule credits/charge from backend for historical months.