Many to relation error

How to solve below error

''Column 'jntkey' in Table 'vw_pmsjntd_summ' contains a duplicate value 'EP-146 048 MW065' and this is not allowed for columns on the one side of a many-to-one relationship or for columns that are used as the primary key of a table.''

My view

create  view [dbo].[vw_pmsjntd_summ]
as
select distinct d.welder,h.kp,h.kp_no,h.refkey,h.weldrepno,h.welddate,h.rt1,
case when h.rt1dt>='01/01/2015' then h.rt1dt else null end as rt1dt,
h.rtpassed,h.sortfld1,h.inchdia,h.stagno,h.etagno,wps,
d.refkey+d.welder as jntkey,
case when d.welddate>='01/01/2015' then 1 else 0 end as welded,
case when d.welddate>='01/01/2015' and rt1dt>='01/01/2015' then 1 else 0 end as tested,
case when d.welddate>='01/01/2015' and rt1dt>='01/01/2015' and rtpassed=1 then 1 else 0 end as accepted,
case when d.welddate>='01/01/2015' and rt1dt>='01/01/2015' and rtpassed=0 and sortfld1 like '%RS%' then 1 else 0 end as reshoot,
case when d.welddate>='01/01/2015' and rt1dt>='01/01/2015' and rtpassed=0 and sortfld1 not like '%RS%' then 1 else 0 end as rejected,
w.name,w.badgeno,cast(w.qualified as nvarchar(max)) as qualified,
case when reldate>='01/01/2015' then reldate else null end as reldate,
case when w.welder like 'C%' then 'AUTOMATIC' ELSE 'MANUAL' end AS welder_type
from vw_pmsjntd as d left join vw_pmsjnth as h on d.refkey=h.refkey
left join vw_pmswldr as w on d.welder=w.welder
where h.welddate>='01/01/2015' and h.weld_no not like '%R%' and h.weld_no not like '%CAS%' and h.isono not like 'MW%' AND ( H.ISONO <> 'EP-156'AND H.weld_no ='007' )

this is my relation

Error is below

''Column 'jntkey' in Table 'vw_pmsjntd_summ' contains a duplicate value 'EP-146 048 MW065' and this is not allowed for columns on the one side of a many-to-one relationship or for columns that are used as the primary key of a table.''

How to solve ?