Stages of Invoice Schedules are changed behind the scenes as you perform actions on the Invoice of the Contract. Let’s see what we have got here –

Let’s say I have a Fixed Price Contract Line for which I’ve generated the Invoice Schedule for spanning across a few weeks.

So, when an Invoice Schedule is Ready for Invoicing, it will be considered in the Invoice you’ll end up creating.

Now, if you create the Invoice for that Contract (shown below)

The Invoice Status now changes to ‘Customer invoice created‘

And, when you mark the Invoice as Confirm, as shown below,

The Invoice schedule record’s Invoice Status will be changed to ‘Customer invoice posted’

Finally, even if you mark the Invoice as ‘Mark Invoice as Paid’, shown below, the Invoice Status still remain in ‘Customer invoice posted’ status –

As simple as that! 🙂