Rule 6.429 - Correction and Appeal of Sentence(A) Authority to Modify Sentence. The court may correct an invalid sentence, on its own initiative after giving the parties an opportunity to be heard, or on motion by either party. But the court may not modify a valid sentence after it has been imposed except as provided by law. Any correction of an invalid sentence on the court's own initiative must occur within 6 months of the entry of the judgment of conviction and sentence.(B) Time For Filing Motion.(1) A motion to correct an invalid sentence may be filed before the filing of a timely claim of appeal.(2) If a claim of appeal has been filed, a motion to correct an invalid sentence may only be filed in accordance with the procedure set forth in MCR 7.208(B) or the remand procedure set forth in MCR 7.211(C)(1).(3) If the defendant may only appeal by leave or fails to file a timely claim of appeal, a motion to correct an invalid sentence may be filed within the time for filing an application for leave to appeal under MCR 7.205(A)(2)(a) and (b)(i)-(iii).(4) If the defendant is no longer entitled to appeal by right or by leave, the defendant may seek relief pursuant to the procedure set forth in subchapter 6.500.(C) Preservation of Issues Concerning Sentencing Guidelines Scoring and Information Considered in Sentencing. A party shall not raise on appeal an issue challenging the scoring of the sentencing guidelines or challenging the accuracy of information relied upon in determining a sentence that is within the appropriate guidelines sentence range unless the party has raised the issue at sentencing, in a proper motion for resentencing, or in a proper motion to remand filed in the court of appeals.Amended effective 5/1/2018; amended May 23, 2018, effective 9/1/2018; amended August 30, 2018, effective 9/1/2018; amended September 23, 2020, effective 1/1/2021; amended May 5, 2021, effective 9/1/2021.