i want to create a sequence field in the res.partner model, from my custom module (my_module) 

for that i proceeded this way 

class ResPartner(models.Model):

    _inherit = 'res.partner'
    
    account_number_is = fields.Char(string="Account Number")
   
    @api.model 
    def create(self, vals):
        if vals.get('account_number_is', ('New')) == ('New'):
            vals['account_number_is'] = self.env['ir.sequence'].next_by_code('acount.number.test') or ('New')
        result = super(ResPartner, self).create(vals)
        return result 

and in the /data/sequence.xml i declared my sequence 

 <record id="seq_scanning_test" model="ir.sequence">
            <field name="name">Account Number Test</field>
            <field name="code">acount.number.test</field>
            <field name="prefix">Bq/</field>
            <field name="padding">4</field>
            <field name="company_id" eval="False"/>
        </record>

what i realize is that the create function dosent find the sequence because it isn't in the same model, so for that i tried this code 

@api.model 
    def create(self, vals):
        if vals.get('account_number_is', ('New')) == ('New'):
            vals['account_number_is'] = self.env['ir.sequence'].next_by_code('my_module.acount.number.test') or ('New')
        result = super(ResPartner, self).create(vals)
        return result 

but still dosent work yet, what i am still missing ?