< Coupon master is not registered (4206)

Error content	The called coupon master has not been registered.
Detail	Does not exist in the internal master.
Solution	[DELETE] button => Delete coupon No. of product master. [SET] button => Cancel error.
Action by user	Reconfirm the coupon master number. Add the coupon master.
Action by service representative	Confirm the master.
Related part	Main board
Remarks	・The called coupon No. is displayed. ・In the case of no coupon No. automatic update, product master is not changed. ・Error screen can be changed in link master error settings. ・Master name can be checked in "MENU TITLE (OPERATE) settings".