Before a team can start on a sprint, they will need to:

Creating a set of iterations describes higher-level release planning activities, not the immediate prerequisite step before starting an individual sprint.

An icebox holds deprioritized or deferred items and reviewing it is not a standard Scrum prerequisite before beginning a sprint.

Sprint planning requires the team to review the product backlog - an ordered list of all pending work items - and select the highest-priority items to commit to for the sprint. This prioritization step ensures the team focuses on the most valuable work and has a clear, agreed-upon sprint goal before development begins.

Converting client requirements into a task list is an earlier discovery or backlog creation activity that occurs well before individual sprint planning sessions.