My 1099 information is not pulling correctly. I believe it is due to creating sub accounts under the main Contractor acct. How do I rectify this?

the sub accounts have to be mapped to the 1099 as well as the parent account

I agree with @Rustler, @lori.bobbythebui.

If you haven't e-filed your 1099 yet, we can simply go back to step 2 in 1099 section and make sure all account (including sub-accounts) are selected to correct it.

However, QuickBooks doesn't support corrections if the form has already e-filed.

Even so, you can still correct it in using a printed copy and send it by mail to the IRS. 

Note: If the contractor of the 1099 form wants the information corrected, you'll need to provide the amended return to the contractor and file it again.

You can also correct errors on Forms 1099-MISC by checking this article: How to correct errors on Forms 1099-MISC.

Click the reply button if you need further help with this. I'll be around to help.