LCR
the required liquidity buffer for 30 days of outflow
In more detail
The liquidity requirement: the store of easily sold property has to cover the outflow expected over 30 days of siege.
It was invented because a bank dies not from a loss but from having nothing to pay with on one particular day.
In the academy “LCR” is not a definition but an operation: you post it yourself and watch what it does to the balance sheet.