What is the test for revocation of probation for a defendant who failed to register as a registered offender?

Considering the entire record in the light most favorable to the judgment, we conclude there was more than sufficient evidence to support the finding that defendant had violated at least three conditions of his probation. The trial court, therefore, did not abuse its discretion when it revoked defendant's probation. As an order revoking probation may properly be based on a single ground (see Pen. Code, 1203.2, subd. (a); People v. Taylor, supra, 260 Cal.App.2d at p. 395), to the extent the trial court erred in considering the registration requirement, this error was harmless beyond a reasonable doubt. We are not persuaded by defendant's contentions to the contrary and accordingly affirm.