Unable to create a Materialized view on the below query - oracle12c

Question

Hope you all well.
I am able execute the below code and got the right output in oracle.But when trying to create a view its giving the error - a column may not be joined to sub query.
The view is getting created in sql server on the same query but in oracle its giving an error.please help.
select c.Contractid
FROM FCT_EIT_CONTRACT c LEFT OUTER JOIN
DIM_EIT_PROCESS_INSTANCE psi ON psi.SURR_ID = c.PROCESS_INSTANCE_SKEY
LEFT OUTER JOIN
DIM_EIT_ACTION wa ON psi.ACTION_SKEY wa.SURR_ID
LEFT OUTER JOIN
DIM_EIT_ACTION_HISTORY ah ON wa.SURR_ID = ah.ACTION_SKEY
AND psi.SURR_ID = ah.PROCESS_INSTANCE_SKEY
AND ah.ACTION_HISTORY_ID =(SELECT MAX(ACTION_HISTORY_ID) AS Expr1
FROM DIM_EIT_ACTION_HISTORY a
WHERE (PROCESS_INSTANCE_SKEY = c.PROCESS_INSTANCE_SKEY)
AND
(psi.ACTION_SKEY = ACTION_SKEY)))
LEFT OUTER JOIN
DIM_EIT_STEP ws ON ws.SURR_ID = wa.NEXT_STEP_SKEY
WHERE (psi.CurrentStepId NOT IN (100, 130, 131, 132, 900, 902, 910))

Answer 1

Would it help if you moved the offending part of the query to the WHERE clause, e.g.
SELECT c.contractid
FROM fct_eit_contract c
LEFT OUTER JOIN dim_eit_process_instance psi ON psi.surr_id = c.process_instance_skey
LEFT OUTER JOIN dim_eit_action wa ON psi.action_skey wa.surr_id
LEFT OUTER JOIN dim_eit_action_history ah ON wa.surr_id = ah.action_skey
AND psi.surr_id = ah.process_instance_skey
LEFT OUTER JOIN dim_eit_step ws ON ws.surr_id = wa.next_step_skey
WHERE psi.currentstepid NOT IN (100, 130, 131, 132, 900, 902, 910)
-- subquery moved down here
AND ah.action_history_id = (SELECT MAX(action_history_id) AS expr1
FROM dim_eit_action_history a
WHERE process_instance_skey = c.process_instance_skey
AND psi.action_skey = action_skey
);

Answer 2

select
c.contractid
FROM FCT_EIT_CONTRACT c , DIM_EIT_PROCESS_INSTANCE psi, DIM_EIT_ACTION wa, DIM_EIT_ACTION_HISTORY ah,
(select MAX(ACTION_HISTORY_ID) AS ACTION_HISTORY_ID, ACTION_SKEY, PROCESS_INSTANCE_SKEY from DIM_EIT_ACTION_HISTORY group by ACTION_SKEY, PROCESS_INSTANCE_SKEY) a ,
DIM_EIT_STEP ws
where psi.SURR_ID(+) = c.PROCESS_INSTANCE_SKEY
and psi.ACTION_SKEY = wa.SURR_ID(+)
and wa.SURR_ID = ah.ACTION_SKEY(+)
AND psi.SURR_ID = ah.PROCESS_INSTANCE_SKEY(+)
AND ah.ACTION_HISTORY_ID = a.ACTION_HISTORY_ID(+)
and ((a.ACTION_HISTORY_ID is not null and ah.ACTION_HISTORY_ID is not null and ah.PROCESS_INSTANCE_SKEY is not null) or
(a.ACTION_HISTORY_ID is null and ah.ACTION_HISTORY_ID is null and ah.PROCESS_INSTANCE_SKEY is null))
-- and
-- and c.PROCESS_INSTANCE_SKEY = a.PROCESS_INSTANCE_SKEY(+)
-- and psi.ACTION_SKEY = a.ACTION_SKEY
and ws.SURR_ID`+) = wa.NEXT_STEP_SKEY
and (psi.CurrentStepId NOT IN (100, 130, 131, 132, 900, 902, 910)) and contractid in (1313,27, 221)