Show the log for PROC MIXED where you used the SOLUTIONF option and it didn't work.
I run:
data a;
input x1 y study;
id = _n_;
datalines;
0 2 1
1 4 1
2 3 1
3 6 2
4 6 2
5 5 2
6 8 3
7 10 3
8 9 3
9 9 3
;
run;
proc mixed data=a;
ods output solutionF=parms;
class study;
model y = x1;
RANDOM study / SOLUTION;
run;
and the log was:
The SOLUTION option is needed in the MODEL statement. (You may also want it in the RANDOM statement, but that doesn't seem to be what you are asking for in this thread)
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