Answer:
The answer is: That the first is a contract and the second a record.
Step-by-step explanation:
The first is a contract of sale and purchase promise is a preparatory contract, that is, it is the preparatory or initial part of another contract, which is the contract of sale with which the promise in the promise contract materializes or materializes, and that requires the signature of both parties.
The second is a billing record on the invoice already issued.
The answer is: That the first is a contract and the second a record.