Neb. Rev. Stat. § 29-814.06: Neb. Rev. Stat. § 29-814.06

If the original of the oral or telephonic statement, taken pursuant to section 29-814.02 or 29-814.03 , shall be lost, destroyed, or a critical portion thereof is unintelligible, a search warrant issued pursuant to such oral or telephonic statement shall be deemed to be invalid.