question

Just like a lot of things, this isn't as simple as it seems. In order to certify with payment networks partial authorizations must be supported (unless you provide a business case and provide a waiver). This is problematic for Clover because we support so many verticals.

Handling this is not complicated and voiding the payment is simple in all of our Clover Connector SDKs. No special handling is required to void a partial. Here is some code for handling this from the Remote Pay Cloud SDK (JavaScript) , it will be similar for Payment Connector (which you should be using instead of firing raw intents):

onSaleResponse: function(response) {
    const requestAmount = activeSaleRequest.getAmount();
    activeSaleRequest = null; // The SaleRequest is complete
    if (response.getSuccess()) {
        const payment = response.getPayment();
        // We are choosing to void the payment if it was not authorized for the full amount.
        if (payment && payment.getAmount() < requestAmount) {
            const voidPaymentRequest = new clover.remotepay.VoidPaymentRequest();
            voidPaymentRequest.setPaymentId(payment.getId());
            voidPaymentRequest.setVoidReason(clover.order.VoidReason.REJECT_PARTIAL_AUTH);
            updateStatus(`The sale was approved for a partial amount (${payment.getAmount()}) and will be voided.`, false);
            cloverConnector.voidPayment(voidPaymentRequest);
        } else {
            updateStatus("Sale complete.", response.result === "SUCCESS");
            console.log({
                message: "Sale response received",
                response: response
            });
            if (!response.getIsSale()) {
                console.log({
                    error: "Response is not a sale!"
                });
            }
        }
    } else {
        updateStatus(`The sale was not successful.`, false);
    }
},

You can find a test card to test this scenario here (manual entry required, CardEntryMethods.ALL):

https://docs.clover.com/clover-platform/docs/test-card-numbers-for-declines-and-partial-transactions

Note - You will also receive a device event when the partial auth confirmation screen is displayed on the device. You could technically use that event to select the "No" input option but the customer may select yes before you have a chance to so I don't advise doing this.