All In One Separate Sequence Number-Sale, Purchase, Accounting | All In One Separate Sequence Number - Sale, Purchase, Accounting
https://store.softhealer.com/shop/all-in-one-separate-sequence-number-sale-purchase-accounting-all-in-one-separate-sequence-number-sale-purchase-accounting-246
https://store.softhealer.com/web/image/product.template/246/image_1920?unique=d1b0cd8
(0 review)
Currently, in odoo provide only one serial number. If you want to another serial number for undertaking any official matters like tax id number, fiscal number etc.