Sales Orders and Customer Groups /Segments and Subsegments

· Retailers are not allowed to purchase items from the client and resell them. Sales reps are aware of it but even if they create a sales order the sales order will be rejected by sales manager.### if retailers are assigned to a special customer group or segment maybe i can create a rule to prevent sales reps from creating a sales order? Would i be able to do this? Or would you suggest something else?### HELP!

I would modify it without using the customer group or segment. Leave the segment for CRM and the customer group to control posting (unless there is a 1:1 relationship here). You need to do this on an item/customer level I presume. Nothing as standard would do this.