Cardigan ceased!

My pattern says “… ending on a RS row, cast off 14 sts and slip remainder onto a st holder”

Now my problem is should I have completed a front facing row or the reverse facing row before I cast off?

Welcome to KnittingHelp!
Can you tell us which part of the cadigan you’re working on? Is there a link to the pattern or a pattern name?
Offhand, it sounds like you should complete the RS or front facing row, then cast off on the WS or private facing row.

Thankyou for your response, hopefully it is now sorted