Hi,

To solve the issue, you have two good options:

1- Use a domain with a callable (Python)

If the domain depends on runtime values like the current company, you should implement it with a method:

analyst_id = fields.Many2one(

    "res.partner",

    string="Analyst",

    required=True,

    domain=lambda self: [

        ("is_company", "=", False),

        ("parent_id", "=", self.env.company.partner_id.id),

    ],

    help="Analyst who performed this analysis",

    default=lambda self: self.env.user.partner_id,

)

Here the lambda self: ensures the domain is evaluated at runtime, so it will correctly use the current company’s partner.

2- Use domain in the XML view instead

You can leave the Python field definition simple and add the runtime-specific filter in the view:<field name="analyst_id"

       domain="[('is_company','=',False), ('parent_id','=', company_id)]"/>

This way, Odoo evaluates the domain dynamically in the client based on the current record.

Since you want to restrict analysts to the contacts under the current company’s partner, Option 1 with the Python lambda is usually cleaner if this should always apply system-wide. Option 2 makes sense if you only want this restriction in specific views.

Hope it helps