TOPIC: User STORY Modify/Add/Delete

For this issue, I am a bit confused
If one sprint carried out halfway

1.PO want to modify one user story that's still in processing ,how should we(Team Member) do , reject it or what?
2.
2.1 If PO want to add new user story to this iteration , how should we do ,reject it then tell him that maybe we can do it at next sprint
2.2 If the new story is very urgent, PO how to do it ,waiting the end of this sprint ,or ask add it into the spring in processing

3.If we (team member) want delete one user story from this spring (in processing),Could we delete it ,
or need to obtain the consent of others(Scrum Master or PO)

Best Regards,

Winson

Hi Winson,

Every new request should not always be treated as an emergency. In this regard, an abnormal termination of a sprint would be recommended. This also creates visibility to all the stakeholders and is then these reasons would be addressed at the sprint's retrospective.

Can you elaborate on the scenario for why would the team want to delete a user story from this sprint? This points to either a lack of proper backlog grooming or a shift in business direction which would cause throwaway work.

Brett.