I received a letter from the Ga Department of Revenue stating that my refund amount had been approved but subject to audit verification. What does this mean? Audit?

[FaithY]

No, you are not being audited. GA uses that standard language on all its correspondence. 

You would receive a letter of Proposed Adjustments (GA's name for an audit) if you were being audited.

Click the following link or information on GA Proposed Assessment .