How have the courts dealt with sentencing error claims in sentencing error cases?

The cases appellant relies upon in support of her claim of sentencing error are premised, in part, on the claim an amended complaint was required before the court could proceed with sentencing and the court was obligated to approve the filing of the amended charging document. (See People v. Lettice (2013) 221 Cal.App.4th 139, 141, 149.) The due process concerns raised in Letticewhich arose from the prosecution filing an amended pleading to add a strike prior after the plea was enteredare inapplicable in this case.