baugh05

Thanks for the reply Adam! I am still receiving the error email using the following code:

// tie into the WooCommerce MailChimp 'ss_wc_mailchimp_subscribe_merge_vars' action filter to modify the MailChimp merge vars
function ss_wc_modify_mailchimp_merge_fields( $merge_vars, $order_id ) {
    // By default $merge_tags will look like array( 'FNAME' => 'Joe', 'LNAME' => 'Smith', 'EMAIL' => 'joe.smith@example.com' );

    // Retrieve the WooCommerce order
    $order = new WC_Order( $order_id );
  
  	// Get the order billing address
    $billing_address = $order->get_address( 'billing' );

    // Get the billing address state
    $state = $billing_address[ 'state' ];
  
  	// Get the billing address country
    $country = $billing_address[ 'country' ];

    // let's add a new 'STATE' merge field - NOTE: You'll need to change this to the actual name
    // of your merge field in MailChimp
    $merge_tags[ 'STATE' ] = $state;
	$merge_tags[ 'COUNTRY' ] = $country;
  
    return $merge_tags;
}
add_filter( 'ss_wc_mailchimp_subscribe_merge_tags' , 'ss_wc_modify_mailchimp_merge_fields', 10 , 2 );

Any suggestions on how I can fix the snippet to get billing address state and country fields to save to mail chimp?