getEnteredCoupon

boolean|array public static
\Bitrix\Sale\DiscountCouponsManager::getEnteredCoupon(
 string $coupon,
 boolean $clearData = false
);

When coupon is not yet added, the method executes an attempt to add it. Returns coupon data on success. Static method.

Parameter	Description	Version
$coupon	Coupon code.
$clearData	When returns true, clears system fields before adding the data.