Is it "following up on" or "following up with"? [closed]

Which of the following sentences would be correct?

  1. I am following up with a purchase.

  2. I am following up on a purchase.


Solution 1:

The phrase "follow up with" is used for someone. Example : You should follow up with him later.

"Follow up on" is used for something. So, you can use "I am following up on a purchase."