Zoho CRM in Microsoft Power Automate Custom Connector

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:
Base URL: /crm/v2
Endpoint: /Events
Method: POST
Authentication: OAuth 2.0 using Zoho EU (https://accounts.zoho.eu/oauth/v2/token)
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

    • Sticky Posts

    • Kaizen #197: Frequently Asked Questions on GraphQL APIs

      🎊 Nearing 200th Kaizen Post – We want to hear from you! Do you have any questions, suggestions, or topics you would like us to cover in future posts? Your insights and suggestions help us shape future content and make this series better for everyone.
    • Kaizen #198: Using Client Script for Custom Validation in Blueprint

      Nearing 200th Kaizen Post – 1 More to the Big Two-Oh-Oh! Do you have any questions, suggestions, or topics you would like us to cover in future posts? Your insights and suggestions help us shape future content and make this series better for everyone.
    • Celebrating 200 posts of Kaizen! Share your ideas for the milestone post

      Hello Developers, We launched the Kaizen series in 2019 to share helpful content to support your Zoho CRM development journey. Staying true to its spirit—Kaizen Series: Continuous Improvement for Developer Experience—we've shared everything from FAQs
    • Kaizen #193: Creating different fields in Zoho CRM through API

      🎊 Nearing 200th Kaizen Post – We want to hear from you! Do you have any questions, suggestions, or topics you would like us to cover in future posts? Your insights and suggestions help us shape future content and make this series better for everyone.
    • Client Script | Update - Introducing Commands in Client Script!

      Have you ever wished you could trigger Client Script from contexts other than just the supported pages and events? Have you ever wanted to leverage the advantage of Client Script at your finger tip? Discover the power of Client Script - Commands! Commands
    • Recent Topics

    • Free webinar! Close deals faster with Zoho Sign from Zoho CRM

      Hello, Are you tired of chasing down signatures and getting stuck with paperwork delays in your sales process? With the seamless integration between Zoho Sign and Zoho CRM, you can create and send documents for signing online, close deals faster, and
    • Files stores in Library Marketing Automation

      Hi, How can i switch from card view to list view in Marketing Automation My Files.?
    • Paid for upgrade and no change

      I paid the $24.99 rate to upgrade to Pro version and no change when I signed out and signed back in.
    • Issue with Code Snippet Styling Overlap in Zoho Landing Page

      Dear Support Team, I have encountered an issue on the Zoho Landing Page while working with code snippets. When I try to create a custom script and add HTML, CSS, and JavaScript within the code snippet, the styling appears to overlap and affect other code
    • Adding yearly Calander

      How to add Yearly calander and employee data from admin console
    • Zoho Leave Policy > Portugal maternity Leave 120 days or 150 days

      Hello All In this Portugal maternity Leave policy, the government allow employee to apply 120 days they will have 100% paid salary if they apply 150 days they take 80% of the paid salary minimum 1 days and maximum 120 days or 150 days Should i setup this
    • Feature Request - Copy Reschedule Link

      Hi Bookings Team, I had a client contact me today, to let me know that she can't make a meeting she booked this week. I can't remember if I included a reschedule link in email notifications, but I was thinking that it would be great if I could just open
    • eCommerce ZUG Virtual Meetup – Critical Role of e-Signatures in eCommerce

      Hello there! Are you in the ecommerce industry and looking for a secure, compliant e-signature solution to handle all your paperwork? From vendor onboarding and supplier contracts to internal HR and finance workflows, speed, scalability, and customer
    • Zoho Desk iOS app update: Archived ticket list view

      Hello everyone! In the latest iOS version(v2.10.7) of the Zoho Desk app update, we have brought in support to access the 'Archived Ticket views' on the 'Ticket Views' screen. Tickets that have been Closed and inactive for 120+ days will be automatically
    • Chart of Accounts

      Is it possible to reorder chart of accounts manually? Currently, when creating new sub accounts accounts, they appear in order they were created i.e. not in alphabetical or numerical order based on manually assigned account codes. It's very messy! Also,
    • Zoho People Candidate Unable to see Non Admin Data

      Hello All I have assign this user as specific user as Group CEO and have access all legal entity, business unit division When i login to the user and look into onboarding i do not see any data in the candidate view This is the admin view that i have 2
    • Issues With Image Formatting when Importing Word Documents as Articles

      Hello, I am having formatting issues when importing .docx files into articles. The documents look fine on Word, but once they are imported into an article, the images will overlap text and other images. Occasionally there will be added space between images
    • ZOHO COMMERCE 2.0 – Réinventer la vente, repenser la valeur

      Il y a cinq ans, nous avons lancé Zoho Commerce pour accompagner les entreprises dans la vente en ligne. À cette époque, notre objectif était clair : simplifier l'e-commerce. Aujourd’hui, le marché a évolué, tout comme les attentes des entrepreneurs.
    • Business hours in reports

      Hi. If I activate the business hours for my tickets. Does it affect in reports? I mean, if before, without working hours a ticket comes in on a Monday and closes the following Monday, in the resolution time in working hours I get 7 days. I want to know
    • Zia Field Prediction - Unable to Validate Dataset Entries

      Lastly, whenever we want to create a new field prediction, the status gets stuck in Incomplete and when I try to annotate tickets, I get an error message saying "Unable to validate dataset entries." I've tried deleting and recreating the prediction, but
    • Using an article already existing in Zoho Desk KB as a resolution for another tickets

      Hi, I've read about the Resolution tab of the Tickets and the ability of adding a Resolution to the Knowledge Base so that both agents and customers be able to access this information. However, and considering several tickets may be solved by following the same procedure, here's my question: if, for a ticket, I solved it and added the way I solved it as an article in our KB, is it possible to grab that article and use it as a resolution for another tickets with similar characteristics? If it's not,
    • How to create knowledge base article from api?

      How to create knowledge base article from api?
    • Disabling Smart Writing Assistant

      Hello, I've found this article when looking to disable the Zoho Smart Writing Assistant in our Zoho Desk environment. I appreciate that the article is for another Zoho solution, however, I was still unable to disable this feature! Could we please have
    • Append tags to records on import

      Dear Customers, We hope you're well! Tags in Zoho CRM are humble labels you can earmark your records with for quick classification and recognition. You can tag records one by one when you have only a few records to update; you can automate tagging when
    • "Recently Changed Payload Format" for webhooks in Zoho Billing

      We are seeing a message about recently changed payload format for webhooks in zoho billing. I cannot find any notification about this change can you give me more information on this?
    • Kaizen #198: Using Client Script for Custom Validation in Blueprint

      Nearing 200th Kaizen Post – 1 More to the Big Two-Oh-Oh! Do you have any questions, suggestions, or topics you would like us to cover in future posts? Your insights and suggestions help us shape future content and make this series better for everyone.
    • Zoho People Created a UBO/Group CEO Profile to view all employees

      Hello All I have created a specific role UBO/ Group CEO Profile that is able to access to view all employees information Applicability i have input all the legal entity, business unit and division which most employees are added. I have also given access
    • We've updated the webhook payload format

      We’ve updated the default payload format for webhooks as part of our ongoing efforts to standardize the webhook format across Zoho Finance suite of applications. Note: This change is also applicable for the webhooks configured from the Developer Portal.
    • Zoho People > Access of Left Menu

      Hello All May I check how do i activate or de-activate of the left menu for users do i control via role or specific role? I have assign a user to Team member
    • Custom Button - Location Choice is not changeable in creation

      I created a custom button for the Tasks module that calls a function to streamline mass updates of closing tasks as "complete". I want to place it in either the utility menu or the mass action menu, but when I create the button the "select page" field
    • Workflow on Clone

      Hello. I'm interested on creating a workflow on a clone of a record in the Price_Books module that will clone also all the related Products and associate the new ones with the new Price_Book. My problem starts with that there's no On Clone event, only
    • How can I create a button in a widget that pops up a form created in ZOHO Creator when clicked?

      I know that using HTML snippets, clicking the button can pop up the form. However, the same code does not work in the widget. <button><a href="#Form:form2?zc_LoadIn=dialog">Add</a></button>
    • Introduce an option to hide the form title

      My feature request is to include an option to hide the form title. At the moment it is possible to hide the header. In some cases I do want to show a logo image in the header but not the form title. As a workaround I have tried disabling the header and
    • Answer Bot and Personalized Questions

      Hi there, I have the same problem using the SalesIQ Answer Bot and the Zoho Desk Answer Bot (which really need different names, to be honest, in order to avoid confusion...) Customers that visit our website ask questions in the form of "What do you do?"
    • 関連トピックから配信リストをつくる

      ZOHOキャンペーンの既存の連絡先リストを関連トピックで絞り込んで、配信リストを作成する方法があれば、教えてください。
    • Zoho Mail not working

      Anyone else had the issue where emails wont send from either the desktop CRM or the mail app? It just says "syncing" then "failed". I deleted it and tried to access emails through the CRM on my phone (fold) but they dont show. It seems it is impossible
    • Shorten one URL but not all

      I have read that I should be able to click on the shorten link button at the bottom of the post window and shorten just one URL. But it does all of the URLs in my post. I want only one shortened. Not sure what I'm missing. Any help appreciated.
    • Generate leads from instagram

      hello i have question. If connect instagram using zoho social, it is possible to get lead from instagram? example if someone send me direct message or comment on my post and then they generate to lead
    • What is Zoho Marketing Plus?

      As if there wasn't enough confusion with SalesIQ, CRM, Campaigns and Marketing Automation, now we have Marketing Plus too. Can somebody from Zoho please give us a comparative list of features that are in Marketing Plus compared to what's in Marketing
    • I didn't receive my domain verification mail

      I didn't receive my domain verification mail 
    • Creating a new deal with specific layout and pipeline

      I am trying to create a button which creates a new deal for a particular account. It needs to be assigned a specific layout and pipeline. It seems like it should be really simple but I've been struggling to get this to work all day, can anyone help?!
    • Announcing New Features in Trident for macOS (v.1.21.0)

      Hello everyone! Trident for macOS is here with interesting features to elevate your workplace communication and productivity. Let's take a quick look at them. Get better visibility for concurrent events. Quickly compare and manage simultaneous events
    • Modifying Product Details

      I am in the process of setting up new products in Zoho Commerce and have encountered a few problems: 1) Tabs It seems that Product Details pages do not have the ability to create Tabs. eg:  https://www.thedebugstore.com/tp240141-aardvark-usb-i2c-spi-host-adapter-total-phase.html
    • Zoho Commerce B2B

      Hello, I have signed up for a Zoho Commerce B2B product demo but it's not clear to me how the B2B experience would look for my customers, in a couple of ways. 1) Some of my customers are on terms and some pay upfront with credit card. How do I hide/show
    • Creating a custom CSV file using deluge script/

      I have an application I have developed and the client wants us to place an export file in csv onto an ftp server daily. Now I don't see au options in creator to change the separator to anything else. The client wants the separator to be the pipe symbol "|"  I think i would be able to create schedule with some code to create the appropriate data in a string using deluge script but I haven't seen any functionality that would allow me to deposit that data as a file anywhere or attach it to an email
    • Next Page