This article covers 

My end customers are getting an error while adding their bank account via Chargebee checkout

Solution 

At times, your end customers may face an error while adding their bank account information via the Chargebee checkout, this usually happens when a customer has a bank account in the UK and the currency is GBP.

Reason: When your customer adds their payment details via hosted pages, it defaults to SEPA and the end customer needs to change the scheme at the right top to BACS.