The official scorekeeper makes that decision.
Error
this error occures because when txting from your computer aim decides you are not worthy of their power
Magistrates court
Human error.
The Literary Digest
Appellate court
No, this is not ruled an error.
While the umpire decides balls and strikes, safe call and out calls, it's the Offical Scorer( usually someone in the pressbox) who decides hits and errors (among other scoring judgements.
Using statistics from the 2011 MLB season, there were 2419 total games played and 3053 total errors committed. This averages out to 1.26 errors committed each game.
A passed ball is not recorded as an error.
An error.
Error