Jan 28, 2021 · AppsR12. Purchase Order PO Table Details in Oracle Apps R12. January 28, 2021. Tags: Oracle Apps R12, PO. No Comments. Purchase order PO table details in Oracle Apps R12, PO_HEADERS_ALL table plays an important role in PO Purchasing module, all PO module tables are linked with PO header table which stores PO header related information. "/>