Hello Grvsinghal,
You could try using call execute as below:
data b; set a; run;
data _null_;
set a;
by id;
l_id=lag(id);
l_status=lag(status);
if id eq l_id and status eq 'A' and l_status='Z' then do;
call execute('data b; set b;
if id eq '||id||' and _N_ le '||_N_||' and status="Z" then status="A";
run;');
end;
run;
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