1. A computer-method of a supplier/buyer (S/B) network providing catalog updates, comprising; receiving, by the S/B network, a request for an update of product information of a catalog, comprising the S/B network scheduling a task for updating product information of the catalog comprising the S/B network periodically checking whether a buyer is requesting a product information update; receiving, by the S/B network, a profile request of a supplier from the buyer; confirming, by the S/B network, that the supplier supports product updates, comprising checking a corresponding supplier profile of the supplier after receiving the profile request of the supplier; the S/B network receiving the request for a product information update from the buyer, and requesting the product information update from the supplier, after confirming that the supplier supports product updates, and after receiving the request for the product information update from the buyer; receiving, by the S/B network, the product information update from the supplier; and updating, by the S/B network the catalog based on the product information update.