3581430 - Catalog Validation Error: This subscription from Ariba Network contains a supplier that is unknown to Ariba Buyer. Your Supplier Manager has been notified. After the supplier is entered, this subscription will be re-imported. [SAP Ariba]

In SAP Ariba Buyer site: catalogs imported from the Ariba Network (AN) are stuck in status "Validation Error" with 0 listed under "# of items".

On the supplier's Ariba Network site: the supplier sees the subscription(s) listed with the error 1 Validation Errors Found by Customer 

SAP Ariba Buying and Invoicing, Ariba Network

Ariba Network, Sync, Validation Error, Subscription, zero items , KBA , BNS-ARI-CM-AN , SAP Business Network Sync , Problem