Hello, I am preparing the PSPO certification and have comme across something which has now given me a huge doubt (which I didn't have at all before) after reading Ken Schwabers book "Agile Project Management with Scrum".
In Appendix A, where the rules are adressed, I read the following rule concerning the Sprint :
"The Team commits to Product Backlog during the Sprint planning meeting. No one is allowed to change this Product Backlog during the Sprint. The Product Backlog is frozen until the end of the Sprint. "