message archiving in single stack PO

i am in single stack po , 7.4 sp 09

is it possible to archive successful messages in SAP PO ? if so for how long

where can i check whether archived messages are there? which transaction or path should i follow

i also want to know how many days it will be configured

basis guys say it was configured for archivng but that guy left the organziatoon and I am not able to verify