Citi mistakenly credits $81 trillion to customer account

Citigroup mistakenly credited $81 trillion to a customer's account instead of $280 before reversing the transaction hours later, the Financial Times reported on Friday.

The error took place last April and was missed by a payments employee and a second worker before it was cleared to process the following day, according to the newspaper, which cited an internal account and two people familiar with the matter. 

A third employee discovered the error an hour and a half after the payment was processed; the transaction was reversed several hours later, the Financial Times said.