3631904 - A new EP number is generated on my purchase order when it receives an ERP push error

When my purchase order receives an ERP push error on an earlier version of the requisition, SAP Ariba generates a new EP number for the purchase order. I would like to understand why a new EP number is generated in this scenario.

EP number, ERP push error, purchase order reference number, new EP number, ERP push failure, purchase order, reprocess, reference number, ERP integration, push error , KBA , BNS-ARI-PUR-REQ , Requisitioning , BNS-ARI-PUR-PO , Purchase Orders , BNS-ARI-PUR-PO-CHG , Change Orders , How To