Improper column reference in the search condition of a joined table - response (2) by Adharssh

SELECT DATE as SYS_DATE,
T1.KSN_ID,
T1.ITEM_ID,
T1.DVSN_NBR,
T2.CAN_CARR_MDL_ID,
T2.NETWORK_DISTRB_CD,
T3.KM_DAY70_CHK_STR_QTY,
T5.LOCN_NBR,T5.SERV_DC_NBR,
b.DC_CD,
c.THIRTEEN_WK_FRCST,
SUM (DISTINCT B.OO_QTY),
SUM (DISTINCT B.OH_QTY),
SUM (DISTINCT D.STR_OH_QTY),
SUM (DISTINCT D.STR_OO_QTY_R),
SUM (DISTINCT D.STR_OO_QTY_NR) 
from Dataview.ksn T1
INNER JOIN 
Dataview.item T2
ON T1.ITEM_ID = T2.ITEM_ID
INNER JOIN
Dataview.Item_store_count_c T3
ON T1.ITEM_ID = T3.ITEM_ID
INNER JOIN
Dataview.ITEM_LOCN_SERV_DC T5
ON  T1.ITEM_ID = T5.ITEM_ID 
LEFT JOIN  (
Select   J2.KSN_ID as KSN_ID,   J2.DC_CD as DC_CD,   J2.LOCN_NBR as LOCN_NBR,
    Sum (J2.ON_ORD_QTY) as OO_QTY,   Sum (J2.ON_HAND_QTY) as OH_QTY            
FROM   Dataview.DC_STK_STAT_C J2                           
GROUP BY    1,2,3) b         
 on (T1.KSN_ID= b.KSN_ID  and T5.SERV_DC_NBR = b.LOCN_NBR)     
LEFT JOIN (
Select    J4.KSN_ID,     J4.ITEM_ID,    J4.LOCN_NBR,    SUM(FRCST_13_WK_QTY) as THIRTEEN_WK_FRCST         
From     Dataview.item_locn_replen J4           
GROUP BY           1,2,3) c           
 on (T1.KSN_ID = c.KSN_ID and T5.SERV_DC_NBR = c.LOCN_NBR)     
 JOIN   (
Select    J3.KSN_ID,    J3.LOCN_NBR,    Sum ( J3.SALBL_QTY) as STR_OH_QTY,
     Sum( J3.REPLEN_ON_ORD_QTY) as STR_OO_QTY_R,    Sum(J3.NON_REPLEN_ON_ORD_QTY) as STR_OO_QTY_NR         
From         Dataview.STR_STK_STAT_C J3              
Group by         1,2) d         
 on (T1.KSN_ID = d.KSN_ID and T5.LOCN_NBR = d.LOCN_NBR)   
  where T1.KSN_ID IN(48464611) 
GROUP BY 1,2,3,4,5,6,7,8,9   
ORDER BY 1;

I have replaced the Condition from Where clause to the INNER JOIN. Since You have used the Join in WHERE Clause, it will perform an inner join on the T1,T2,T3,T5 Tables...
from Dataview.ksn T1
INNER JOIN
Dataview.item T2
ON T1.ITEM_ID = T2.ITEM_ID
INNER JOIN
Dataview.Item_store_count_c T3
ON T1.ITEM_ID = T3.ITEM_ID
INNER JOIN
Dataview.ITEM_LOCN_SERV_DC T5
ON  T1.ITEM_ID = T5.ITEM_ID
Thanks & Regards,
Adharssh.