from odoo import api, fields, models

class DecimalPrecision(models.Model):
    _inherit = 'decimal.precision'

    def write(self, vals):
        res = super(DecimalPrecision, self).write(vals)
        if 'digits' in vals:
            for record in self:
                if record.name == 'Reward Point':
                    # Sync to all pos.config records
                    # We iterate to avoid 'Expected singleton' error in multi-company
                    for config in self.env['pos.config'].sudo().search([]):
                        config.write({'reward_point_digits': record.digits})
        return res