How to create a coupon on specific product in Magento?

Let's say I have 10% off coupon code.
This coupon is applicable only to Product B

A customer have in its cart :

Product P1
Product B
Product P2

I don't want my 10% off coupon apply to other product but only to Product B.

Do you know how I can do that within Magento?

Solution

Here is the process to create Coupon Code for any particular product:-

Login to Admin

Go to Promotions -> Shopping Cart Price Rules

Click Add New Rule

Fill Rule Information

Set Conditions

On left sidebar, click Conditions tab

Click + button icon

Select Product attribute combination

Click + button icon

Select SKU

Now, you will see SKU is ...

Put your product SKU over there

Please note that the SKU option may not show up by default. (Go to: catalog -> attributes -> manage attributes. Then search for the ‘SKU’ attribute and set the drop down ‘Use for Promo Rule Conditions’ to YES and reindex if needed.)

Set Actions

You can set how much discount you want to give from here

Save Rule