WordPress at a glance
filter is not described

wc_product_has_unique_sku filter-hook . WC 1.0

Usage

add_filter( 'wc_product_has_unique_sku', 'filter_function_name_3424', 10, 3 );
function filter_function_name_3424( $sku_found, $product_id, $sku ){
	// filter...

	return $sku_found;
}
$sku_found
-
$product_id
-
$sku
-

Where the hook is called

wc_product_has_unique_sku()
wc_product_has_unique_sku
woocommerce/includes/wc-product-functions.php 593
if ( apply_filters( 'wc_product_has_unique_sku', $sku_found, $product_id, $sku ) ) {

Where in WP core the hook is used WooCommerce

Usage not found.