Hi,

Following link may help you:
https://www.odoo.com/forum/Help-1/question/can-we-hide-createedit-button-of-form-view-16340

Nehal,
unfortunately, it doesn't help much, as in my case a tree view is concerned, not the form view.

Luis Filipe,
users should still be able to add existing entries, but not the new ones. I was talking about prohibiting CREATION, not prohibiting ADDITION.

Hi, in the page definition of your view try this:

                            <page string="Tracing">
                                <field name="tracing_ids">
                                    <tree delete="false" create="false" >
                                        <field name="change_date" />
                                        <field name="executor" />
                                        <field name="state" />
                                        <field name="assigned_to" />
                                    </tree>
                                </field>                            
                            </page>

With the attributes create="false", users won't be able to add new entries. and the delete="false" they won't be able to delete them either.

I hope this is what you wanted.