Remove paste restrictions on the account number
I have my routing and account number in a Google Doc for a situation like this when I pay from my account. There's no option to paste the account number in the second field. I keep those numbers so I can easily copy/paste them without a need to type them manually which causes mistakes in the first place. If this is a way to reduce the number of mistakes you accidentally made it more error prone by forcing me to put the number manually.
Regards

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Steven Christenson commented
Not only that, by REQUIRING someone to type something, it leaves them vulnerable to a key logger which a copy paste is NOT.
But I can see this idea is more than 2 years old, so I'm guessing that this "improvements" portal is in fact a way to waste time, just like the current confirmation procedure.