How can I make the opportunity's Win/Loss Reason field required?
To make the Win/Loss Reason field required when closing an opportunity, you can use the Close Opportunity Win/Loss Reason Required profile option (MOO_CLOSE_WINLOSS_REQD).
To make the Win/Loss Reason field required when closing an opportunity, you can use the Close Opportunity Win/Loss Reason Required profile option (MOO_CLOSE_WINLOSS_REQD).