What is the initial action a supervisor should take when voiding a transaction with an activated shop card?

The initial action a supervisor should take when voiding a transaction with an activated shop card is to press the VOID button. This is a standard procedure in retail environments to ensure that the transaction is properly canceled in the system. Pressing the VOID button initiates the process of reversing the sale, thereby removing any charges associated with it from the customer's account. This action is crucial as it ensures that the transaction history is accurately reflected and that no errors occur during the return of funds to the shopper’s card.

In addition, using the VOID function allows the system to appropriately track voided transactions for loss prevention and audit purposes. Other options would not effectively initiate the void process or would complicate the situation, potentially causing confusion or errors in the financial recordkeeping. For instance, keying in the total amount of the original transaction would not correctly void the transaction but could lead to discrepancies in the store's financials. Initiating a new transaction is not relevant to voiding, and reporting to a manager, while sometimes necessary for other issues, is not the first step in processing a void.