Unified Product ID for Facebook Feed || WPML || PFE

function adt_wpml_unified_product_id( $product_data, $feed, $product ) {

    // Only run for Facebook dynamic remarketing feed

    if( isset($feed->channel['fields']) && $feed->channel['fields'] == 'facebook_drm' ) {

        // Get current product ID

        $product_id = $product->get_id();

        // Get original product ID from WPML (if exists)

        $original_id = apply_filters('wpml_original_element_id', NULL, $product_id);

        if ( $original_id ) {

            $product_id = $original_id;

        }

        // Set product ID in the feed data

        $product_data['id'] = $product_id;

    }

    return $product_data;

}

add_filter( 'adt_get_product_data', 'adt_wpml_unified_product_id', 10, 3 );