Problema no PARSE de XML

Fala galera,

Estou tentando fazer a leitura de um XML e salvar os dados em variavel para poder trabalhar com elas depois, mas o namespace tem me dado um pouco de trabalho, rs.

Vi uma solução na internet, tentei aplicar mas não deu certo. Alguém poderia ajudar?

create or replace PROCEDURE GERAR_OUT_QLT AS
v_xml clob := '

 <?xml version="1.0" encoding="UTF-8" ?>
 <ns1:MT_InventoryMovements_REXI xmlns:ns1="http://cnh.com/sapecc/mm/MMIIMC01">
 <ESB_Header>
 <ESB_Envelope>
 <ESB_VERSION>1.0.0</ESB_VERSION>
 <MSG_TYPE>
 <MSG_TYPE_NAME>REXI</MSG_TYPE_NAME>
 <REX_INDICATOR>00001/00001</REX_INDICATOR>
 <REX_ATTEMPT_INDICATOR>00</REX_ATTEMPT_INDICATOR>
 <MSG_INDICATOR>00001/00001</MSG_INDICATOR>
 <SUBFLOW>
 <SUBFLOW_NAME>MMLIMC01CO</SUBFLOW_NAME>
 <SUB_LOGICAL_RECORD_INDICATOR />
 </SUBFLOW>
 </MSG_TYPE>
 <TID>10000000000000406916</TID>
 <TID_TIME_STAMP>2017-01-03 18:33:33</TID_TIME_STAMP>
 <IDFLOW>MMLIMC01</IDFLOW>
 <SENDER>BS_CNH_CLICK_CO_QAL</SENDER>
 <LOGICAL_TARGET>BS_CNH_SAPR3_URN</LOGICAL_TARGET>
 <FLOW_VERSION>001</FLOW_VERSION>
 </ESB_Envelope>
 <ESB_Attributes />
 </ESB_Header>
 <ESB_Payload>
 <goods_movement>
 <header>
 <PSTNG_DATE>20170103</PSTNG_DATE>
 <DOC_DATE>20170301</DOC_DATE>
 <REF_DOC_NO>123456</REF_DOC_NO>
 <VENDOR>BPG95</VENDOR>
 <PR_UNAME>CLICK</PR_UNAME>
 <CODE_GM_CODE>01</CODE_GM_CODE>
 <item>
 <PLANT>CB01</PLANT>
 <MATERIAL>14497101</MATERIAL>
 <SOURCE_STGE>W100</SOURCE_STGE>
 <DEST_STGE>W100</DEST_STGE>
 <MOVE_TYPE>107</MOVE_TYPE>
 <ENTRY_QNT>0000000001.000</ENTRY_QNT>
 <ENTRY_UOM>ST</ENTRY_UOM>
 <PO_PR_QNT>0000000000.000</PO_PR_QNT>
 <PO_NUMBER>CB10003230</PO_NUMBER>
 <ITEM_PO_ITEM>00001</ITEM_PO_ITEM>
 <MVT_IND>B</MVT_IND>
 </item>
 </header>
 </goods_movement>
 </ESB_Payload>
 </ns1:MT_InventoryMovements_REXI>';

 XML_PSTNG_DATE VARCHAR(255) := '';
 XML_DOC_DATE VARCHAR(255) := '';
 XML_REF_DOC_NO VARCHAR(255) := '';
 XML_VENDOR VARCHAR(255) := '';
 XML_CODE_GM_CODE VARCHAR(255) := '';
 XML_MATERIAL VARCHAR(255) := '';
 XML_STCK_TYPE VARCHAR(255) := '';
 XML_ENTRY_QNT VARCHAR(255) := '';

 /*************************************************************************************/

 CURSOR C_NEWREG(p_xml clob) IS
 SELECT XMLQLD.*
 FROM (SELECT xmltype(p_xml) AS XML FROM DUAL) V,
 XMLTABLE(XMLNAMESPACES('http://cnh.com/sapecc/mm/MMIIMC01' AS X), '/ESB_Payload/goods_movement/header' PASSING V.XML COLUMNS
 XML_PSTNG_DATE VARCHAR2 (4000) PATH 'X:PSTNG_DATE'
 )XMLQLD;
 R C_NEWREG%ROWTYPE;

 /*************************************************************************************/
 BEGIN

 FOR R IN C_NEWREG(v_xml) LOOP

 DBMS_OUTPUT.PUT_LINE('XX > XML_PSTNG_DATE ' || r.XML_PSTNG_DATE);

 END LOOP;

END;