Insurers don't mind if you have two or more life insurance policies. What they are concerned with is if you are Overinsured.
So, when you apply for a policy, they have a question on the application for coverage that asks if you own any other life insurance policies, and how much total life insurance coverage you already have.
Insurers understand that your need for life insurance may increase over time as you get older and take on more financial responsibilities, which would require more life insurance protection.
To learn more please read this article: "How Many Life Insurance Policies Can You Have?"