Finally I've found the solution. fortimgr_lock module locks ADOM and returns session_id, which must be used in other modules: - name: "LOCK: IBB FW" fortimgr_lock: host: "{<!-- -->{ inventory_hostname }}" username: "{<!-- -->{ username }}" password: "{<!-- -->{ password }}"<!-- --><!-- --><!-- --><!-- --><!-- --><!-- --><!-- --><!-- --><!-- -->...

So, I've captured session_id from fortimgr_lock module and send it to the fortimgr_address module: - name: "LOCK: IBB FW" fortimgr_lock: host: "{<!-- -->{ inventory_hostname }}" username: "{<!-- -->{ username }}" password: "{<!-- -->{ password }}" lock: True adom: "IBB" reg<!-- --><!-- --><!-- --><!-- --><!-- --><!-- --><!-- -->...

I'm trying to update create New Address Object:- name: "CREATE: New address objects" fortimgr_address: host: "{<!-- -->{ inventory_hostname }}" username: "{<!-- -->{ username }}" password: "{<!-- -->{ password }}" adom: "IBB" lock: False address_type: ipmask network_address<!-- --><!-- --><!-- --><!-- -->...