The customer is experiencing an issue where their Purchase Order (PO) numbers are being flagged and cannot be processed, despite being associated with different customer accounts. This problem arose after a recent update to the BC system, which previously allowed the same PO number to be entered for different customers to prevent duplication of sales orders. However, the update has led to BC blocking the entry of the same PO number across different accounts, which is often requested by the customers. Customer PO numbers being flagged and unable to process although they are different customer accounts. BC was recently updated and noticed the change. We originally could enter the same PO number if it were different customers which was to avoid duplication of a sales order on a customer account. Now BC is blocking a PO number from being entered even on different accounts which often is requested by the customers.