Can a single coupon in Zoho ERP be applied across multiple products, plans, addons, or items?

Yes. In Zoho ERP, a single coupon can be associated with multiple products along with their related plans and addons. Businesses can choose to apply a coupon to all products or restrict it to specific products based on their promotional requirements. For each selected product, the coupon can further be configured to apply to all plans, selected plans, all addons, or specific addons.