GMF_RCV_ACCOUNTING_TXNS

In case of OPM Organization, R12, there will not be any entry in rcv_receiving_subledger for PO receipt.  Instead the same data is available in gmf_rcv_accounting_txns where the linking column to rcv_transactions is rcv_transaction_id.
Deliver transaction details are available in mtl_material_transaction wherein the rcv_transaction table can be linked with rcv_transaction_id in mtl_material_transactions table.
For further drill down for accounting entries, gmf_xla_extract_headers table will have accounting entries details for both receipts and deliver wherein the linking column are source_document_id (which is shipment header id) and source_line_id (transaction_id from rcv_transactions table).

select e.application_id,
         te.source_id_int_1,te.source_id_char_1,te.entity_id,
         e.event_id,e.event_type_code,te.entity_code,
         h.ae_header_id,
         l.ae_line_num,l.application_id,l.code_combination_id,l.gl_transfer_mode_code,l.accounting_class_code,
         l.accounted_dr,l.accounted_cr,
         gir.reference_5,gir.reference_6,gir.reference_7,
         te.transaction_number,
         xdl.SOURCE_DISTRIBUTION_ID_NUM_1,
         pha.segment1
  from xla_events  e, 
       xla_transaction_entities_upg te,
       xla_ae_headers               h,
       xla_ae_lines                 l,
       gl_import_references         gir,
       GMF_RCV_ACCOUNTING_TXNS      GRA,
       RCV_TRANSACTIONS             RT,
       PO_HEADERS_ALL               PHA,
       PO_LINES_ALL                 PLA,
       XLA_DISTRIBUTION_LINKS       xdl
  where  te.ledger_id = 2021
   AND te.entity_id = h.entity_id
   AND te.application_id = h.application_id
   AND e.event_id = h.event_id
   AND e.application_id = h.application_id
   AND h.ae_header_id = l.ae_header_id
   AND h.application_id = l.application_id
   and gir.gl_sl_link_id = l.gl_sl_link_id 
   AND gir.gl_sl_link_table = l.gl_sl_link_table
   and xdl.event_id = e.event_id
   and xdl.ae_header_id = l.ae_header_id
   and xdl.ae_line_num = l.ae_line_num
   and xdl.application_id = l.application_id
   AND TE.SOURCE_ID_INT_1 = GRA.ACCOUNTING_TXN_ID
   AND GRA.RCV_TRANSACTION_ID = RT.TRANSACTION_ID
   AND GRA.PO_HEADER_ID = PHA.PO_HEADER_ID
   AND GRA.PO_LINE_ID = PLA.PO_LINE_ID
   and e.transaction_date >= to_date('20140601','YYYYMMDD')
   and e.transaction_date <= to_date('20140630','YYYYMMDD')
   and e.event_type_code in ( 'RECEIVE','RET_TO_VENDOR')  --接收
   and te.entity_code = 'PURCHASING'