Happened towards end of 2019, didn't seem to have a big impact on anything... https://www.bloomberg.com/news/articles/2019-12-19/fed-says-ach-payment-system-ope

Happened towards end of 2019, didn't seem to have a big impact on anything... https://www.bloomberg.com/news/articles/2019-12-19/fed-says-ach-payment-system-operational-after-suffering-a-delay https://www.bloomberg.com/news/articles/2019-12-19/fed-says-...