Section 768.21 - Failure to file and serve notices or to state names of witnesses with particularity; exclusion of evidence(1) If the defendant fails to file and serve the written notice prescribed in section 20 or 20a, the court shall exclude evidence offered by the defendant for the purpose of establishing an alibi or the insanity of the defendant. If the notice given by the defendant does not state, as particularly as is known to the defendant or the defendant's attorney, the name of a witness to be called in behalf of the defendant to establish a defense specified in section 20 or 20a, the court shall exclude the testimony of a witness which is offered by the defendant for the purpose of establishing that defense.(2) If the prosecuting attorney fails to file and serve a notice of rebuttal upon the defendant as provided in section 20 or 20a, the court shall exclude evidence offered by the prosecution in rebuttal to the defendant's evidence relevant to a defense specified in section 20 or 20a. If the notice given by the prosecuting attorney does not state, as particularly as is known to the prosecuting attorney, the name of a witness to be called in rebuttal of the defense of alibi or insanity, the court shall exclude the testimony of a witness which is offered by the prosecuting attorney for the purpose of rebutting that defense.1927, Act 175, Eff. 9/5/1927 ;--CL 1929, 17314 ;--CL 1948, 768.21 ;--Am. 1974, Act 63, Eff. 5/1/1974 ;--Am. 1975, Act 180, Eff. 8/6/1975 ;--Am. 1976, Act 51, Imd. Eff. 3/21/1976 .