Zoho CRM in Microsoft Power Automate Custom Connector
Hi everyone,
I’m building a Power Automate flow that integrates Microsoft Bookings with Zoho CRM. The goal is to automatically create a meeting (event) in Zoho CRM whenever a new appointment is booked via Microsoft Bookings.
To achieve this, I created a Custom Connector in Power Automate:
Host: www.zohoapis.eu
Base URL: /crm/v2
Endpoint: /Events
Method: POST
Authentication: OAuth 2.0 using Zoho EU (https://accounts.zoho.eu/oauth/v2/token)
Redirect URI: https://global.consent.azure-apim.net/redirect/zoho-20crm-20connector-20tryover-5f6ad10e40bc6e-35e04f5a3bcb8c23
Scope: ZohoCRM.modules.ALL
In the connector’s test tab, I enabled Raw Body and used the following payload:
{
"data": [
{
"Subject": "Consultation
with John Doe",
"Start_DateTime":
"2025-08-12T10:00:00+02:00",
"End_DateTime":
"2025-08-12T10:30:00+02:00",
"Description": "Booked via
Microsoft Bookings"
}
]
}
However,
when I test the operation, I receive a 400 INVALID_REQUEST error from Zoho CRM
with the message: "unable to process your request. please verify whether
you have entered proper method name, parameter and parameter values."
The Headers
of the error message is:
{
"cache-control":
"private,no-cache,no-store,max-age=0,must-revalidate",
"content-length": "192",
"content-security-policy":
"default-src 'none';frame-ancestors 'self'; report-uri
https://logsapi.zoho.com/csplog?service=crm",
"content-type":
"application/json;charset=UTF-8",
"date": "Tue, 12 Aug 2025
10:14:26 GMT",
"expires": "Thu, 01 Jan 1970
00:00:00 GMT",
"pragma": "no-cache",
"referrer-policy":
"strict-origin",
"strict-transport-security":
"max-age=64072000; includeSubDomains; preload",
"x-content-type-options":
"nosniff",
"x-download-options":
"noopen",
"x-frame-options":
"SAMEORIGIN",
"x-ms-apihub-cached-response":
"true",
"x-ms-apihub-obo":
"false",
"x-ms-dlp-ef":
"-|-/-|-|-",
"x-ms-dlp-gu": "-|-",
"x-ms-dlp-re": "-|-",
"x-ms-environment-id":
"default-80ed74fa-8f44-4a36-9520-c03e719ed98a",
"x-ms-mip-sl": "-|-|-|-",
"x-ms-tenant-id":
"80ed74fa-8f44-4a36-9520-c03e719ed98a",
"x-xss-protection": "0;
mode=block"
}
The Body of
the error message is:
{
"code":
"INVALID_REQUEST",
"details": {},
"message": "unable to process
your request. please verify whether you have entered proper method name,
parameter and parameter values.",
"status": "error"
}
I’ve
confirmed the endpoint is /crm/v2/Events, the headers are correct
(Content-Type: application/json, Accept: application/json), and authentication
is successful.
What could be causing this error, and how can I resolve it?
Thanks a lot to anyone who can help!
Best,
Martin
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