16. The method of claim 1 , wherein the detecting comprises detecting an out-of-grammar correct reject (OGCR) type error if the system fails to recognize the user utterance in the grammar and the grammar fails to include the transcribed version.
17. The method of claim 16 , further comprising: determining that the grammar includes insufficient acoustic models if the OGCR type error is detected; and adding to the grammar at least one additional acoustic model.