Prerequisites are located in the menu on the left.

Commit coupons

(RTP-33982)

If POS is not able to commit coupons. It will save transaction locally and retry the commit according to schedule in new parameter.

POS Configuration

New POS parameter:

OfflineCouponRedemptionJobSchedule - 0 0/20 * * * ? 

 If blank it is not active. Set to cron schedule.

This only works if existing parameter IgnoreCouponCommitErrors is set to  True.