from odoo import models, fields, api


class ResConfigSettings(models.TransientModel):
    _inherit = 'res.config.settings'

    deposit_product_id = fields.Many2one(
        'product.product',
        string='Default Deposit Product',
        domain=[('type', '=', 'service')],
        config_parameter='purchase_advance_payment.deposit_product_id',
        help='Default product used for advance payment deposits'
    )