fix: Tax is not set to default for distance expense.

src/components/MoneyRequestConfirmationList.tsx

@@ -47,6 +47,7 @@ import {
     getTaxValue,
     hasMissingSmartscanFields,
     hasRoute as hasRouteUtil,
+    isCustomUnitRateIDForP2P as isCustomUnitRateIDForP2PUtil,
     isMerchantMissing,
     isScanRequest as isScanRequestUtil,
 } from '@libs/TransactionUtils';
@@ -269,6 +270,7 @@ function MoneyRequestConfirmationList({
     const isTypeInvoice = iouType === CONST.IOU.TYPE.INVOICE;
     const isScanRequest = useMemo(() => isScanRequestUtil(transaction), [transaction]);
     const isCreateExpenseFlow = !!transaction?.isFromGlobalCreate && !isPerDiemRequest;
+    const isCustomUnitRateIDForP2P = isCustomUnitRateIDForP2PUtil(transaction);
 
     const transactionID = transaction?.transactionID;
     const customUnitRateID = getRateID(transaction);
@@ -427,9 +429,26 @@ function MoneyRequestConfirmationList({
             return;
         }
 
+        if (isCustomUnitRateIDForP2P && DistanceRequestUtils.getDefaultMileageRate(policy)) {
+            const defaultMileageRatePolicy = DistanceRequestUtils.getDefaultMileageRate(policy);
+            setCustomUnitRateID(transactionID, defaultMileageRatePolicy?.customUnitRateID);
+            return;
+        }
+
         // If none of the above conditions are met, display the rate error
         setFormError(errorKey);
-    }, [isDistanceRequest, isPolicyExpenseChat, transactionID, mileageRate, customUnitRateID, policy, isMovingTransactionFromTrackExpense, setFormError, clearFormErrors]);
+    }, [
+        isDistanceRequest,
+        isPolicyExpenseChat,
+        transactionID,
+        mileageRate,
+        customUnitRateID,
+        policy,
+        isMovingTransactionFromTrackExpense,
+        setFormError,
+        clearFormErrors,
+        isCustomUnitRateIDForP2P,
+    ]);
 
     const routeError = Object.values(transaction?.errorFields?.route ?? {}).at(0);
     const isFirstUpdatedDistanceAmount = useRef(false);