Send a Limited Time Offer (LTO) Code Template Message

Using a WhatsApp LTO code template, you can send a WhatsApp LTO code message.

Following are the steps to send a WhatsApp LTO code message.

Pre-requisites:
1. An active kaleyra.io account, if you do not have, you can contact a kaleyra representative to sign up for free to the platform. Before you get started, Create a Kaleyra Account and Create an API Key.
  To view the API Key and the SID, see View API Key and SID..
2. An active WhatsApp for Business API plan that includes:
  A WhatsApp business number.
  An associated profile with the business number.
  A WhatsApp verified and approved profile.
Create a WhatsApp LTO code template. See, Create an LTO template.
Use the LTO code template in a WhatsApp message to send a LTO code message.

The following API request format is for sending a WhatsApp message with an LTO template.

curl --location 'https://api.kaleyra.io/v1/<sid>/messages' \
--header 'api-key: <api-key>' \
--form 'to="<to-number>"' \
--form 'type="mediatemplate"' \
--form 'template_name="<template_name>"' \
--form 'channel="whatsapp"' \
--form 'from="<from-no>"' \
--form 'coupon_code="\"<coupon_code>\""' \
--form 'limited_time_offer="[
          {
            \"type\": \"limited_time_offer\",
            \"limited_time_offer\": {
              \"expiration_time_ms\": <expiration_time>
            }
          }
        ]"' \
--form 'media=@"/path/to/file"' \
--form 'callback_profile_id="<callback_profile_id>"' \
--form 'param_url="login"' \
--form 'media_url="<media_url>"'

WhatsApp message API request with LTO template

The following API request sends a WhatsApp message with an LTO template.

curl --location 'https://api.kaleyra.io/v1/HXIN1784509XXXXX/messages' \
--header 'api-key: Abf2e77c4d1cfa6854a7423a68e7XXXXX' \
--form 'to="1202XXXXXXX"' \
--form 'type="mediatemplate"' \
--form 'template_name="lto_true_vid_dyan_test"' \
--form 'channel="whatsapp"' \
--form 'from="1202XXXXXXX"' \
--form 'coupon_code="\"happy76\""' \
--form 'limited_time_offer="[
          {
            \"type\": \"limited_time_offer\",
            \"limited_time_offer\": {
              \"expiration_time_ms\":1209600000}
          }
        ]"' \
--form 'media=@"/path/to/file"' \
--form 'callback_profile_id="IN_XXXXXXXX-046b-4565-892c-XXXXXXXXXXXX"' \
--form 'param_url="login"' \
--form 'media_url="https://d38vr2u95vsr9f.cloudfront.net/docs/1684759885mp4_file.mp4"'

Parameter Description Table

Following table shows the list of parameters and data types supported:

Parameter	Data Type	Description	Example	Mandatory?
SID	String	Security Identifier of your kaleyra.io account	HXXXXXXX071US	Yes
api_key	String	Your API Key generated by Kaleyra.io.	Ac4XXXXX21f	Yes

to	String	A valid WhatsApp number of the recipient. Ensure that the country code is prefixed to the number. (E164 format). Note: You can add multiple recipients, separate each number using the comma (,) delimiter.	+1202XXXXXXX	Yes
type	String	The message type.	mediatemplate	Yes
template_name	String	The template name.	LTO_template	Yes
channel	String	Channel on which message must be sent. For the WhatsApp channel, the only allowed value is WhatsApp.	WhatsApp	Yes
from	String	The number registered with WhatsApp business from which the message is to be sent. Ensure that the country code is prefixed to the number. (E164 format).	+1202XXXXXXX	Yes
callback_profile_id	String	The callback ID created for WhatsApp channel to receive updates about the message delivery status. Note: You can also use callback_url to get updates about the message delivery status to the specified URL.	In_XXXXXXXX-04XX-XXXX-XXXX-deac8de3c83d	No
media_url	String	The media URL should be public and have a file extension. Note: URL path is supported for image/video/media instead of uploading it. If both media and mediaurl are passed in API request, then only "media_url" will be considered. If a header is used, then only image/ video type is supported in the sample media field or sample _ media_url. Otherwise, this is not a mandatory field.	https://www.kaleyra.com/wp-content/uploads/kaleyra.png	No
coupon_code	String	This field will hold the text that needs to be copied when the COPY CODE button is clicked.	coupon_code: “happy76”.	Yes
limited_time_offer	object	This field holds the offer expiration time as UNIX TIMESTAMP which indicates the date on which the offer ends. Note: This object parameter is mandatory for an LTO template.	limited_time_offer: [ { "type": "limited_time_offer", "limited_time_offer": { "expiration_time_ms": 1209600000 }}] Note: This parameter is mandatory when the LTO template has ‘has_expiration’ parameter set to true.	No

Limited_time_offer object parameters description table

The following table describes the object parameters in WhatsApp Message request that uses an LTO template.

Parameter	Data Type	Description	Example	Mandatory?
type	String	Type of the limited time offer object	limited_time_offer	Yes
limited_time_offer	Object	This is an object parameter within the limited time offer object that has a time parameter to define the validity period of the offer. The ‘limited_time_offer’ parameter is an offer code expiration time in UNIX timestamp measured in milliseconds.	“limited_time_offer": { "expiration_time_ms": 1209600000} Note: This expiration time equals to 14 days when converted to days from milliseconds.	Yes
expiration_time_ms	Numeric	This is a unix timestamp that represents the expiration time in milliseconds.	1209600000	Yes

Sample success response

The following is a sample success response.

{  
    "id": "08a72b9e-9e0e-46af-a41b-2d87bf30e036",  
    "type": "mediatemplate",  
    "body": null,  
    "createdDateTime": "2024-01-12 07:08:43+00:00",  
    "totalCount": 1,  
    "data": [  
        {  
            "message_id": "08a72b9e-9e0e-46af-a41b-2d87bf30e036:0",  
            "recipient": "xx9986xx70xx"  
        }  
    ],  
    "error": {}  
}

Sample error response

The following is a sample error response.

{  
    "code": "RBC201",  
    "message": "Incorrect SID or API key.",  
    "data": \[],  
    "error": {  
        "error": "Incorrect SID or API key."  
    }  
}

Updated 3 months ago

What’s Next

Create a Limited Time Offer (LTO) Code Template