This is a more clear and concise way to write what you are trying to say:
"The local and international clients document checklist, to be sent by the Due Diligence Team, is attached.
Note that it is not within the scope of the Due Diligence team activities to execute, analyze or any type of follow up of processes related to account opening or any other Cadastro Team activities.
This proactivity will require all relevant documentation from both teams, in order to make client contact more efficient. However, after receiving the documentation, the Due Diligence team will only act during the onboarding process and all activities that relates to its responsibility."
Tip: When writing a text always ask yourself "Can the person reading this text understand it easily?"
Note: I had help of a specialist on the subject matter to correct this text.