Map the systems and their responsibilities
A POS records orders and may manage inventory or staff workflows. A payment processor handles payment transactions. A gateway connects supported online payment requests. A bank account receives and holds funds. An accounting system records the business's books. One provider may combine several roles, but the roles still need clear owners and support paths.
- Ask which system owns product, customer, order, and payment records.
- Document how identifiers travel between systems and how duplicate records are prevented.
- Confirm which company supports a failed connection rather than assuming every issue belongs to the POS vendor.