acf/first_activated │ action-hook │ ACF 1.0

Usage

add_action( 'acf/first_activated', 'wp_kama_acf_first_activated_action' );

/**
 * Function for `acf/first_activated` action-hook.
 * 
 * @return void
 */
function wp_kama_acf_first_activated_action(){
	// action...
}

Where the hook is called

do_action( 'acf/first_activated' );

Where the hook is used in Advanced Custom Fields PRO

add_action( 'acf/first_activated', array( $this, 'add_activation_event' ) );