There are two types of possibilities to apply specifications:
No limitations. You can create as much as you need.
Yes. You can give a discount on specific products. When you will create a new specification then it will ask you to choose any one option
Unfortunately, we have not added features to add limitations because as many discount codes will be sent to the customer. Customers will purchase many products from your stores.
No. Shopify doesn’t allow its customers to use more than one discount code on the checkout.
You can install Discountify from Shopify App Store.
If you think you need more rules or customization on Discountify, then fill free to get in touch and we are here to help you!