For our company ODOO v16 - .Sh was implemented by ODOO partner company X with very minimum customization.
After implementation -we do not have any kind of SLA with them. It was on call based service charges.
After 2 years now management want to upgrade to 18 with more customization as per business need with new ODOO partner Y.
What are the credentials we should get from company X and to handover to company Y
Thanks