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Please be aware that you won't be able to execute this step described above directly in the API Reference section due to tool limitations: it is not possible to calculate required headers and send a request simultaneously.

Headers & Authorization type

Parameter	Data type	Description
Date	string	Date and time when the request was generated. The signature will be valid for 15 minutes from this Date. The date should be in the format “Thu, 01 Jan 2023 12:00:00 +0000” (RFC2822)
Content-type	string	Request data type. Currently, only `application/json` is supported.
Content-MD5	string	For the request body, it is necessary to calculate the MD5 hash and indicate it in the header in lowercase. At the same time, it is important to keep in mind that the request body is calculated as a stream of bytes without considering the end of JSON markup, and if there are `\n` or spaces at the end, they will also be taken into account. For GET requests, MD5 must also be calculated. Even if nothing is passed in the request body, MD5 will be obtained from an empty string.
X-Signature	string	Signature of the request as a string. It is formed from the name of the method (GET/POST) in uppercase, with the values of the headers concatenated by `\n`. Header values come in a specific order. If there is no header, an empty string is specified instead. Next, add the requested path from the URL without the protocol and domain (without GET parameters) to the line. The resulting string is calculated using HMAC-SHA1, and as a secret, we use the channel secret obtained during registration. The resulting hash in lowercase is indicated in the X-Signature header.

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You should write the body in your request exactly the same as written when calculating the headers.

Message status

Status	When status should be used	Enum status value
Sent	The message was sent from Kommo	-
Delivered	The message was delivered to destination	1
Read	Message was read by recipient	2
Error	Message was not delivered	-1

Error codes

Error code	When should the code be sent?
901	The user has deleted the message
902	Integration disabled on channel side
903	Internal server error
904	Unable to create a conversation (For example, the user is not registered in WhatsApp)
905	Any other error (you must send the error text)

Data type header when the request is successful/in case of an error

Content-Type: application/json

Examples of request body

Change message delivery status to Read

{
    "msgid": "XXXXXX-2aa3-464c-b6e4-4386d0f8f3ca",
    "delivery_status": 2
}

Change message delivery status to Error

{
    "msgid": "3419eef6-2aa3-464c-b6e4-4386d0f8f3ca",
    "delivery_status": -1,
    "error_code": 905,
    "error": "An unknown error occurred"
}