I got an email saying I need to Signature Authorization AZ-8879 where do I locate it? My taxes were already accepted i know i need to Amend them?

An email from whom?  What is their email address?

The Form AZ-8879 is not used by the taxpayer.

 

Arizona website - https://azdor.gov/forms/information-tax-preparers

 

Arizona Form 8879 - Electronic Signature Authorization

This form is to certify the truthfulness, correctness and completeness of the taxpayer’s electronic income tax return. The Electronic Return Originator (ERO) utilizes this form to affirm that the taxpayer wishes to use the taxpayer’s electronic signature from the taxpayer’s federal individual income tax return as the taxpayer’s signature for the taxpayer’s electronic Arizona individual income tax return. 

This form is incorportated within the taxpayer's e-filed return package when using a software vendors, and not to be used by a tax preparer when filing paper.  This form can only be obtained when e-filing a return through a software vendor. 

Do not mail this form to the Arizona Department of Revenue. The ERO must retain this document a minimum of four years.

The email is from turbotax should

I just ignore it? 

Since your state return has already been Accepted by the Arizona state tax authority, disregard the email that you received from TurboTax.

I will notify the TurboTax Moderators concerning this issue.

How should I do that? I've been using TurboTax for 6 years and never had this issue 

You would not know that.  The email was sent in error and you should have never received the email