Same 12 markers different haplogroup s

[Smilelover]

If 2 persons have same STR markers , 0 g.d
But not in the same haplogroup
Is it possible that one of them had wrong assignment

I see one is haplogroup A-M31
His match is in E-M96

[spruithean]

If 2 persons have same STR markers , 0 g.d
But not in the same haplogroup
Is it possible that one of them had wrong assignment

I see one is haplogroup A-M31
His match is in E-M96

Likely convergence, 12 markers is too few markers to really accurately estimate haplogroups.