Query to Find out the Requisition and PO number from Order Number in B2B Order

 SELECT    OOHA.ORDER_NUMBER,
            OOHL.LINE_NUMBER,
            PRHA.SEGMENT1 REQUISITION_NUMBER,
            PRLA.LINE_NUM REQUISITION_LINE_NUMBER,
            PHA.SEGMENT1 PO_NUMBER,
            PLA.LINE_NUM PO_LINE_NUMBER
  FROM   OE_ORDER_HEADERS_ALL OOHA,
         OE_ORDER_LINES_ALL OOHL,
         PO_REQUISITION_HEADERS_ALL PRHA,
         PO_REQUISITION_LINES_ALL PRLA,
         PO_REQ_DISTRIBUTIONS_ALL PRDA,
         PO_DISTRIBUTIONS_ALL PDA,
         PO_HEADERS_ALL PHA,
         PO_LINES_ALL PLA
 WHERE   OOHA.HEADER_ID = OOHL.HEADER_ID
         AND PRHA.INTERFACE_SOURCE_LINE_ID = OOHL.LINE_ID
         AND PRHA.REQUISITION_HEADER_ID = PRLA.REQUISITION_HEADER_ID
         AND PRLA.REQUISITION_LINE_ID = PRDA.REQUISITION_LINE_ID
         AND PRDA.DISTRIBUTION_ID = PDA.REQ_DISTRIBUTION_ID
         AND PDA.PO_HEADER_ID = PHA.PO_HEADER_ID
         AND PHA.PO_HEADER_ID = PLA.PO_HEADER_ID;