Antiguedad de saldo de cartera

Buenos días, saludos desde Ecuador, comparto un script donde extrae las carteras de sap y las puedes llevar a crystal.

SELECT
    TO_DATE(T0."RefDate") AS "F.Emi",
    TO_DATE(T0."DueDate") AS "F.Ven",
    T2."CardName",
    T2."CardCode",
    T1."BaseRef",
    T1."Account",
    T3."AcctName",
    T1."LineMemo" AS "Comentario",
    CASE
        WHEN T1."TransType" = 13 THEN 'FV- ' || (
            SELECT F."FolioNum"
            FROM OINV F
            WHERE F."DocNum" = T1."BaseRef"
        )
        WHEN T1."TransType" = 14 THEN 'NCV- ' || T1."BaseRef"
        WHEN T1."TransType" = 24 THEN 'PR- ' || T1."BaseRef"
        WHEN T1."TransType" = 46 THEN 'PE- ' || T1."BaseRef"
        WHEN T1."TransType" = 18 THEN 'FP- ' || T1."BaseRef"
        WHEN T1."TransType" = 19 THEN 'NCP- ' || T1."BaseRef"
        ELSE T1."TransType" || '- ' || T1."BaseRef"
    END AS "Folio",
    CASE
        WHEN T3."GroupMask" = 1 THEN
            CASE
                WHEN T1."Credit" > 0 THEN
                    (T1."Debit" + (T1."Credit") * -1) + IFNULL(RECON."TP", 0)
                ELSE
                    (T1."Debit" + T1."Credit") - IFNULL(RECON."TP", 0)
            END
        ELSE
            CASE
                WHEN T1."Debit" > 0 THEN
                    ((T1."Debit" * -1) + T1."Credit") + IFNULL(RECON."TP", 0)
                ELSE
                    (T1."Debit" + T1."Credit") - IFNULL(RECON."TP", 0)
            END
    END AS "Saldo",
    T1."TransType"
FROM OJDT T0
INNER JOIN JDT1 T1
    ON T0."TransId" = T1."TransId"
INNER JOIN OCRD T2
    ON T2."CardCode" = T1."ShortName"
INNER JOIN OACT T3
    ON T3."AcctCode" = T1."Account"
LEFT JOIN (
    . SCRIPT QUE REVISA TODAS LAS OPERACIONES DE RECONCILIACIONES POR DOCUMENTO
    SELECT
        I."TransId" AS "TID",
        I."TransRowId" AS "TROW",
        SUM(I."ReconSum") AS "TP"
    FROM ITR1 I
    INNER JOIN OITR O
        ON O."ReconNum" = I."ReconNum"
    WHERE O."ReconDate" <= :FECHA_CORTE
    GROUP BY
        I."TransId",
        I."TransRowId"
    ORDER BY
        I."TransId" DESC
) AS RECON
    ON RECON."TID" = T0."TransId"
   AND T1."Line_ID" = RECON."TROW"
WHERE
    T0."RefDate" <= :FECHA_CORTE
    AND T3."LocManTran" = 'Y'
    AND T1."TransType" <> -3
    AND (T1."Debit" + T1."Credit") - IFNULL(RECON."TP", 0) <> 0;

Cualquier pregunta, responder aquí, el codigo cumple con todo sin necesidad de evaluar por documento