duplicate computers in my device list

Apple5821 wrote:

I am seeing my same device (a Macbook Pro) listed twice among my devices. I know its the same one because the serial numbers are identical. I have no idea how that happened but I want to delete one of them. Does it matter which one I delete?

You can sign into your AppleID and remove it there: Apple ID account page,

select your duplicate>Remove

It may not matter because you can add a device that is not listed...see the below link.

Check your Apple ID device list to see where you're signed in - Apple Support

It may or may not matter if only one is listed in iTunes check the below link and click the "View My Account" link on that page.

View and remove your associated devices in iTunes - Apple Support

But then again you can re add one. Also it will not do any harm to keep both but I understand why you want to delete one.

My phone number was listed twice, I waited a year before I removed one just in case.