contract/agreement_maintenance/views/maintenance_request_view.xml

<!-- # Copyright (C) 2018 Pavlov Media
     # Copyright (C) 2021 Open Source Integrators
     # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl). -->
<odoo>

    <record id="maintenance_request_form_view_agreement" model="ir.ui.view">
        <field name="name">maintenance.request.form.agreement</field>
        <field name="model">maintenance.request</field>
        <field name="inherit_id" ref="maintenance.hr_equipment_request_view_form" />
        <field name="arch" type="xml">
            <field name="priority" position="before">
                <field name="agreement_id" />
                <field
                    name="serviceprofile_id"
                    domain="[('agreement_id', '=', agreement_id)]"
                />
            </field>
        </field>
    </record>

    <!-- Inherit maintenance request search view-->
    <record id="view_maintenance_request_filter_agreement" model="ir.ui.view">
        <field name="name">maintenance.request.select.agreement</field>
        <field name="model">maintenance.request</field>
        <field name="inherit_id" ref="maintenance.hr_equipment_request_view_search" />
        <field name="arch" type="xml">
            <xpath expr="//group" position="inside">
                <filter
                    string="Service Profile"
                    name="serviceprofile_id"
                    domain="[]"
                    context="{'group_by':'serviceprofile_id'}"
                />
            </xpath>
        </field>
    </record>

</odoo>