Showing Credit balance on invoice

Hi guys,

I can’t get it working to show the credit balance of Clients to show on their invoice. I know it’s available through the portal, but we would like to also have it on the invoice. I already did a search on the forum and other people also had the same problem in 2018. Did this change and if yes how would I be able to do this?

Thanks for the reply.

Sorry, it isn’t supported