Most errors are not in the object file.

Object files have symmetry errors and welding errors. Those can mostly be corrected.
And an object file is like clay. You can shape it to whatever you want.

Most errors are in the rigging & magnets, and all the other stuff they sometimes put in; Dependencies, left-right JCM's errors, bones, zones.

 

Left - right symmetry, that is the biggest problem.

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
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