Which of the following is NOT a requirement for a valid real estate sales contract?

A valid real estate sales contract is primarily governed by the Statute of Frauds, which requires certain essential elements for the contract to be enforceable. Among these elements, it must be in writing, it must include a legal description of the property, and it must be signed by all parties involved in the transaction. These requirements ensure there is clear evidence of the agreement and facilitate the identification of the specific property being sold.

The stipulation that a real estate sales contract must be witnessed is not a requirement under California law. Therefore, the absence of witnesses does not invalidate the contract. This distinction highlights that while witnesses can add a layer of security or legitimacy to a contract, they are not legally mandated for the contract to be considered valid. Consequently, the statement regarding the need for a contract to be witnessed is indeed incorrect in the context of the fundamental requirements for a valid real estate sales contract.