For single touch payroll the issue is ensuring each day is reported exactly once. For fortnightly pay look closely at the end of one pay period to the start of the next pay period. For example
This pay roll period ends on the 22/03/2020

So the next must start on the 23/03/2020

For Bas Reporting of Tax withheld use
Not sure about correcting STP role pay event older than the last one
