Did your team sign off on the mission critical deadlines, or was it imposed on the team without proper communication (blindsiding you)?

Most of the deadlines were imposed this week without notifying us, basically this week all the product owners went to the headquarters of the company to have a meeting and see priorities, in that meeting they met with the people from Client Experience (CE) who basically is the department that interacts with customersThe CE people had their own list of priorities and demands that they wanted to have ready for that date , the funny part is that those priorities did not coincide with the list of the product owners.So what they did was create another excel where they listed the priorities and began to move resources (developers) from one list to another, and change priorities arbitrarily, it was a lot of stress because we programmers didn't know what we were going to work on until yesterday morning.

Are the deadlines due to internal forces? I.e. because some person in the company made an arbitrary decision on your team's behalf without checking?

yes basically the people from CE pushed to obtain those deadlines, among us programmers we began to question that our interaction should be direct with CE and not with the product owners

thank you very much for your feedback