Can a defendant who did not object to a probation condition at sentencing raise a challenge to that condition on appeal?

Challenges to probation conditions ordinarily must be raised in the trial court; if they are not, appellate review of those conditions will be deemed forfeited. (People v. Welch (1993) 5 Cal.4th 228, 234-235 (Welch) [extending the forfeiture rule to a claim that probation conditions are unreasonable, when the probationer fails to object on that ground in the trial court].) However, a defendant who did not object to a probation condition at sentencing may raise a challenge to that condition on appeal if the defendant's appellate claim "amount[s] to a 'facial challenge,' " i.e., a challenge that the "phrasing or language . . . is unconstitutionally vague and overbroad," and the determination whether the condition is constitutionally defective "does not require scrutiny of individual facts and circumstances but instead requires the review of abstract and generalized legal conceptsa

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