Horseshoes, Hand Grenades, and Predicate Sentencing:

Besides the classic examples of horseshoes and hand grenades, compliance with the requirements for predicate sentencing is apparently another instance in which getting close is credited.

In People v Mateo, 2008 NY Slip Op 06087 [4th Dept 7/3/08](here] the Fourth Department considered the consequence of the failure of the People to file a
second felony offender statement as required by CPL 400.21 (2) following his retrial. The Court noted that

[t]he People filed a second felony offender statement at the first trial and defendant admitted his status as a second felony offender at that time and at sentencing following the retrial. We thus conclude that there was substantial compliance with the statute.

Thus, the People are required to have only substantial compliance with CPL 400.21 (2).