The answer is two promotional codes in one order, however, if you have entered more than one promotional code for your order, the first code you entered will most likely be used automatically.
Redeem promotional codes
Promotional codes can only be redeemed when you place an order.
Advice: Some promotions and promotional certificates issued by Customer Service may be assigned to your account automatically and appear on the Order Summary page before you complete your order.
To redeem a promotional code:
Follow the instructions of the offer or consult the Terms and Conditions of the promotion.
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Add a participating product to the cart.
On the Select a payment method page or the Review your order page of the order form, enter the promotional code in the Gift Cards and Promotional Codes section exactly as specified. Select Apply. Do not add spaces before, inside or after the promotional code.
Proceed to payment. Verify that the promotional code has been applied correctly by checking the price on the checkout page before ordering. If, for any reason, you don’t place an order at that time, the promotion remains in your account until it is used or expires.
For more information, see Amazon.com.mx Promo Code Terms and Conditions.
Note: If the total cost of the products you purchase exceeds the promotional amount, we will ask you to provide another payment method for the remaining balance on the order form.
Promotional codes cannot be used to pay for gift cards, sales tax, gift wrap, or additional shipping costs.
The promotional code or promotional balance is not displayed in the View My Amazon Balance section of your customer account. Instead, it is automatically deducted at checkout on an order for eligible products (sold and shipped directly by Amazon).
Every time you use coupons, it is best to review the promotions of each provider and use the code that best suits you, this will prevent you from spending discounts that can later be used in another purchase.