They restricted the bank from issuing new credit cards for a year which is a big penalty all things considered. Also, they were given a deadline to get their tech stable and they actually brought in an IT provider for the bank to fix things which was bit high handed. But the bank was very big in the country and a failure can have cascading affects which was the reason said by the central governing bank.
I believe it was the first of the kind in the country to penalize a bank because their tech was unstable.