Exactly. It's not a good idea to bypass policies at work. Just because you don't know why the policy is there or you disagree with the reason, it doesn't mean you can ignore the policy.
If you can't get your job done, then escalate the issue to your manager. You not being able to get your work done because of other teams is the kind of problem they're supposed to be solving.
If you can't get your job done, then escalate the issue to your manager. You not being able to get your work done because of other teams is the kind of problem they're supposed to be solving.