If my debtor/customer e.g. PSA Singapore is using their own portal for billing invoices, how will you handle our invoices? Arvind February 01, 2019 06:28 Updated Follow Integrating with customer's billing portal We would be happy to have our technical team help you integrate with your customer. Please contact support or call +65 6909 0711. Related articles Do I have to submit physical invoices to Finaxar? Or can we send invoices in digital form? Comments 0 comments Please sign in to leave a comment.