diff --git a/15.md b/15.md
index 89e4251..fc78df3 100644
--- a/15.md
+++ b/15.md
@@ -38,7 +38,11 @@ A merchant can publish these events:
 | `0`       | `set_meta`         | The merchant description (similar with any `nostr` public key).                                                 |
 | `30017`   | `set_stall`        | Create or update a stall.                                                                                       |
 | `30018`   | `set_product`      | Create or update a product.                                                                                     |
-| `4`       | `direct_message`   | Communicate with the customer. The messages can be plain-text or JSON.                                          |
+| `30019`   | `submit_order`     | Customer submits order to merchant for product.                                                                 |
+| `30020`   | `request_payment`  | Merchant requests payment for order from customer.                                                              |
+| `30021`   | `confirm_payment`  | Merchant confirms payment is received for order.                                                                |
+| `30022`   | `confirm_shipment` | Merchant confirms order has been shipped.                                                                       |
+| `14`      | `direct_message`   | Communicate with the customer. The messages can be plain-text or JSON.                                          |
 | `5`       | `delete`           | Delete a product or a stall.                                                                                    |
 
 ### Event `30017`: Create or update a stall.