Title 16, Chapter 4, Section 5
(a) When a person's conduct would otherwise constitute an attempt to commit a crime under Code Section 16-4-1, it is an affirmative defense that he abandoned his effort to commit the crime or in any other manner prevented its commission under circumstances manifesting a voluntary and complete renunciation of his criminal purpose.
(b) A renunciation of criminal purpose is not voluntary and complete
if it results from:
(1) A belief that circumstances exist which increase the
probability of detection or apprehension of the person or which
render more difficult the accomplishment of the criminal purpose;
(2) A decision to postpone the criminal conduct until another