According to the Uniform Securities Act, which information is not mandatory on a customer confirmation?

The correct answer here is that the time of execution is not considered mandatory information on a customer confirmation according to the Uniform Securities Act. Customer confirmations are required to provide certain key details about the transaction to the client, which typically includes the date of the transaction, the price of the security being bought or sold, and the identification of the security itself, among other pieces of information.

While the exact time of execution can be important for regulatory and compliance purposes, it is not a requirement that must be included on the confirmation sent to the customer. The other details, such as the date of the transaction, the price of the security, and the customer's account number, are necessary to ensure proper record-keeping and to provide clarity to the customer regarding the specifics of the transaction they just completed. Thus, the omission of the time of execution from the mandatory information on a customer confirmation aligns with the standards set by the Uniform Securities Act.