#Eranga
vernal topaz
green estuary
hello! i'm not sure i understand the question, why do you need to validate this parameter?
cinder summit
Hello @green estuary 😄, I am trying to rely on this value to calculate the amount of credit used for a transaction
For an example, when a user is modifying the quantity of a subscription, I would like to show them the amount of credit that will be gained, or consumed by the change they make
This is prior to updating the subscription hence the upcoming invoice
I tested this and I see this value not being null in the upcoming invoice. But before I write my code, I would like to make sure
green estuary
based on what i read, it shouldn't be null if the invoice has been finalized. But you should still test it in all the applicable scenarios for your implementation
cinder summit
Since I am looking at the upcoming invoice, the invoice will never be finalized.
I tested the scenarios that could happen, but I wanted to make sure whether there is a scenario that could be null for the upcoming invoice. Because in the future we might have a scenario that I didn't test today
green estuary
if I don't know what the scenario is, i wouldn't be able to guarantee that it's not going to be null. Ultimately the upcoming invoice simulates the finalized invoice and so the customer balance shouldn't be null for the upcoming invoice.