Kaizen #4 - Troubleshooting OAuth2.0

Kaizen #4 - Troubleshooting OAuth2.0

Hello everyone!

Welcome back to yet another post in Kaizen! Earlier in this series, we discussed OAuth2.0 and Self Client. In continuation of that, we will now discuss the various errors that you may face while using OAuth2.0 and how you can handle them.

For better understanding, we have grouped the errors based on the OAuth2.0 flow itself.
You may face errors while
  1. Registering a client
  2. Generating the authorization code (grant token)
    a. For web-based applications
    b. For self client applications
  3. Generating access and refresh tokens from the grant token
1. Registering a Client
You can register a client in Zoho Developer Console either as a web application or a self client as displayed in the below image.

The below table explains the errors you may face while registering your client, and how you can handle them.

Error
Reason
Resolution
Enter a valid client name
The client name has a special character.
The client name must not contain any special characters except "_" and "&".
Enter a valid JavaScript Domain URI
The JavaScript domain is incorrect.
Specify valid JavaScript domains, separated by commas, and they must start with 'http'.
Enter a valid redirect URI
The redirect URI is incorrect.
Specify a valid redirect URI in the format "https://www.your-domain.com/callback".
Enter a valid homepage URL
The homepage URL is invalid.
Specify a valid homepage URL in the format "https://www.yourdomain.com".

The following images will give you an idea of these errors.



On a side note, the following are the mandatory entries for different client types. You will see an error when you do not specify any of these mandatory entries.


Client Type
Client Name
Homepage URL
Redirect URIs
JS Domains
Java Script
Y
Y
Y
Y
Web-based
Y
Y
Y
NA
Mobile
Y
Y
Y
NA
Self Client
N
N
N
NA
Device
Y
Y
N
NA

2. Generating the Authorization Code (Grant token)
As you already know, there are two ways in which you can generate the grant token based on the client type.

a. Web-based redirection
In this authorization flow,
  1. The web application redirects the user to the Zoho OAuth server with the required scope in the Accounts URL.
    "https://accounts.zoho.com/oauth/v2/auth?scope=ZohoCRM.users.ALL&client_id={client_id}&response_type=code&access_type={"offline"or"online"}&redirect_uri={redirect_uri}".
  2. As you can see, the request URL has the parameters "scope", "response_type", and "redirect_uri".
  3. The user sees the authorization prompt and approves the app's request as shown in the below image.

  4. The user is redirected back to the application with an authorization code in the query string.

  5. The application exchanges the authorization code for an access token.
The user may face one of the below errors when the application makes an authorization request with one or many incorrect parameters mentioned in step 1.

Error
Reason
Resolution
ERROR_invalid_response_type
a) The value of the "response_type" key is not "code".
b) You have not passed the mandatory keys in the request.
a) The value of the "response_type" key must be "code".
b) Pass all the mandatory keys in the request to generate the grant token.

ERROR_invalid_client
The client ID is wrong or empty.
Pass the right client ID. You can check your client ID from the developer console.
ERROR_invalid_redirect_uri
The redirect URI value passed, and the one registered in the developer console mismatches. 
Pass the right redirect URI.
ERROR_invalid_scope 
The scope is invalid.
Pass valid scopes. You can refer to the list of scopes here.


As you can see, the scope ZohoCRM.user.ALL is incorrect and hence, the system throws the error.
The application must again make the authorization request with proper scopes.

b. Self Clients
After registering your application as a self client, you must provide the necessary scopes in the UI under the Generate Code tab.
The system throws an error when you enter one or more incorrect scopes.

Enter valid scopes and click Generate to generate the code as shown below.


3. Generating Access and Refresh Tokens from the Grant Token
To generate the access and refresh tokens,
  1. Make a POST API call with the URL "{{accounts-domain}}/oauth/v2/token".
  2. In the request body, pass the values of the following parameters.
    a. client_id
    b. client_secret
    c. redirect_uri
    d. code(this is the generated grant token)
    e. grant_type
You may face errors when one or more of the above parameters have a wrong value as shown in the below image.


Error
Reason
Resolution
invalid_client
a) You have passed an invalid Client ID or secret.
b) Domain mismatch. You have registered the client and generated the grant token in a certain domain (US), but generating the tokens from a different domain (EU).
c) You have passed the wrong client secret when multi-DC is enabled.
a) Specify the correct client ID and secret.
b) Ensure that you generate the grant, access, and refresh tokens from the same domain using the same domain URL
(or)
Enable Multi-DC for your client to generate tokens from any domain.
c) Each DC holds a unique client secret. Ensure to pass the right client secret for that DC.
invalid_code
a) The grant token has expired.
b) You have already used the grant token.
c) The refresh token to generate a new access token is wrong or revoked.
a) The grant token is valid only for one minute in the redirection-based flow. Generate the access and refresh tokens before the grant token expires.
b) You can use the grant token only once.
c) Specify the correct refresh token value while refreshing an access token.
invalid_redirect_uri
The redirect URI in the request mismatches the one registered in the developer console.
Specify the correct redirect URI in the request.

Points to note

  1. For redirection-based authorization, the grant token is valid only for a minute.
  2. For self client apps, the grant token is valid for the time you selected while authorizing your application.
  3. If the generation of access and refresh tokens from the grant token fails, the grant token becomes invalidated. You must generate another grant token.
  4. You can generate a grant token only up to five times in a minute.
  5. The access token is valid only for an hour. You must use the refresh token to generate new access tokens.
  6. The refresh token does not expire. It is invalidated only when you revoke the refresh token.
  7. Each user in an organization can have a maximum of 20 refresh tokens. Also, each refresh token can have a maximum of 30 active access tokens.
  8. When a user creates the 31st access token, the system deletes the first created access token. Similarly, when the user creates the 21st refresh token, the system deletes the first created refresh token.

We hope you found this post useful. Keep a tab on this series for more exciting topics!

Reach out to us at support@zohocrm.com if you have any questions, or let us know in the comment section.


Cheers!



      Zoho Campaigns Resources


        • Desk Community Learning Series


        • Digest


        • Functions


        • Meetups


        • Kbase


        • Resources


        • Glossary


        • Desk Marketplace


        • MVP Corner


        • Word of the Day


        • Ask the Experts


          • Sticky Posts

          • Kaizen #217 - Actions APIs : Tasks

            Welcome to another week of Kaizen! In last week's post we discussed Email Notifications APIs which act as the link between your Workflow automations and you. We have discussed how Zylker Cloud Services uses Email Notifications API in their custom dashboard.
          • Kaizen #216 - Actions APIs : Email Notifications

            Welcome to another week of Kaizen! For the last three weeks, we have been discussing Zylker's workflows. We successfully updated a dormant workflow, built a new one from the ground up and more. But our work is not finished—these automated processes are
          • Kaizen #152 - Client Script Support for the new Canvas Record Forms

            Hello everyone! Have you ever wanted to trigger actions on click of a canvas button, icon, or text mandatory forms in Create/Edit and Clone Pages? Have you ever wanted to control how elements behave on the new Canvas Record Forms? This can be achieved
          • Kaizen #142: How to Navigate to Another Page in Zoho CRM using Client Script

            Hello everyone! Welcome back to another exciting Kaizen post. In this post, let us see how you can you navigate to different Pages using Client Script. In this Kaizen post, Need to Navigate to different Pages Client Script ZDKs related to navigation A.
          • Kaizen #210 - Answering your Questions | Event Management System using ZDK CLI

            Hello Everyone, Welcome back to yet another post in the Kaizen Series! As you already may know, for the Kaizen #200 milestone, we asked for your feedback and many of you suggested topics for us to discuss. We have been writing on these topics over the

          Zoho CRM Plus Resources

            Zoho Books Resources


              Zoho Subscriptions Resources

                Zoho Projects Resources


                  Zoho Sprints Resources


                    Zoho Orchestly Resources


                      Zoho Creator Resources


                        Zoho WorkDrive Resources



                          Zoho CRM Resources

                          • CRM Community Learning Series

                            CRM Community Learning Series


                          • Tips

                            Tips

                          • Functions

                            Functions

                          • Meetups

                            Meetups

                          • Kbase

                            Kbase

                          • Resources

                            Resources

                          • Digest

                            Digest

                          • CRM Marketplace

                            CRM Marketplace

                          • MVP Corner

                            MVP Corner




                            Zoho Writer Writer

                            Get Started. Write Away!

                            Writer is a powerful online word processor, designed for collaborative work.

                              Zoho CRM コンテンツ



                                ご検討中の方

                                  • Recent Topics

                                  • Restrict Addresses in Zoho Forms?

                                    In the address field, is there a way to restrict the addresses that auto populate (via Zoho Maps or Google Maps) to a specific state (I know it's possible with the country). Additionally, how often does the address in Zoho Maps get updated? Certain addresses
                                  • Weekly Tips: Secure your attachment downloads with Zoho Mail

                                    Safety is one of our main concerns, whether it’s about device security or online protection. We use tools like fingerprint scanners, facial recognition, and two-factor authentication to keep our devices and email accounts secure. We use methods like OTP
                                  • Resume Harvester: New Enhancements for Faster Sourcing

                                    We’re excited to share a set of enhancements to Resume Harvester that make sourcing faster and more flexible. These updates help you cut down on repetitive steps, manage auto searches more efficiently, and review candidate profiles with ease. Why we built
                                  • Looking for best practices to import data from SAP Business One (on-prem) into Zoho Analytics via Zoho DataPrep / Databridge — daily automated schedule

                                    Hi all, I’m using SAP Business One on-prem (SQL Server / or HANA — depending on DB backend) as our ERP. I want to build a pipeline that, every morning at 9:00 AM IST: pulls transactional data (invoices, customers, products, stock, etc.) from SAP B1, loads
                                  • Zoho One Unified Portal - Applications

                                    Hello, It is great to see the work on the New Unified Customer Portal. Thanks for that. The number of applications is limited though. It is now only around the Zoho Books ecosystem (Books, Expense...) and Zoho Social. = Are other applications planned
                                  • Marketing Tip #10: Start a customer loyalty program

                                    Winning a new customer is great, but keeping them coming back is even better. A loyalty program rewards repeat buyers with points, giving them more reasons to shop again. Over time, this builds trust and long-term relationships. Try this today: Set up
                                  • Zia Actions: AI-powered Workflow Automation for Faster and Smarter Execution

                                    Hello everyone, Updated on 12th Dec 2025 Zia actions for Workflow is available for Enterprise edition ONLY. These features are currently available in the following DCs: US, CA, EU, IN, and AU Email Auto reply and Content Generation are available as Early
                                  • Do Individual Forums within Categories, in Desk Community, Produce Their Own RSS Feed?

                                    Do Individual Forums within Categories, in Desk Community, Produce Their Own RSS Feed? If not, can anyone share a work-around that could help me get an RSS feed for individual category forums?
                                  • Change Last Name to not required in Leads

                                    I would like to upload 500 target companies as leads but I don't yet have contact people for them. Can you enable the option for me to turn this requirement off to need a Second Name? Moderation update (10-Jun-23): As we explore potential solutions for
                                  • Resend Client Portal Invitation + View Email Delivery Status

                                    Hi Zoho Team, We hope you are doing well. We would like to request two important enhancements related to the Zoho Creator Client Portal invitation process. At the moment, when we add a user to the Client Portal, Zoho Creator automatically sends an invitation
                                  • Get user last login

                                    1. Is there a way to programmatically get the last user login to trigger certain workflows? 2. Is there a way to programmatically access the custom fields on a user's account?
                                  • Seeking Zoho Creator Expert (Delivery Management App / Logistics Ops) — Built & Deployed Before

                                    Hi everyone, We’re building a Delivery Management App (focused on delivery operations for now) using Zoho Creator. We’re looking for a Zoho Creator expert who has already developed and deployed a similar delivery/workflow system and can assist us with
                                  • Automating Employee Birthday Notifications in Zoho Cliq

                                    Have you ever missed a birthday and felt like the office Grinch? Fear not, the Cliq Developer Platform has got your back! With Zoho Cliq's Schedulers, you can be the office party-cipant who never forgets a single cake, balloon, or awkward rendition of
                                  • Copy paste from word document deletes random spaces

                                    Hello Dear Zoho Team, When copying from a word document into Notebook, often I face a problem of the program deleting random spaces between words, the document become terribly faulty, eventhough it is perfect in its original source document (and without
                                  • Adding Multiple Files to a Zoho Vault Entry

                                    There is a old blog post talking about adding multiple file attachments to one Zoho Vault Secret: https://www.zoho.com/blog/vault/introducing-new-features-in-zoho-vault-powerful-password-sharing-wider-storing.html Is that still possible, I can see how
                                  • FNB South Africa Bank Feed

                                    I should've thought this wouldn't work. As suspect, Zoho claims to be able to pull bank feeds from First National Bank (South Africa), but fails everytime. I suppose Xero (or even Sage One) is the way to go? If they (miraculously) get it to work again,
                                  • Dropshipping Address - Does Not Show on Invoice Correctly

                                    When a dropshipping address is used for a customer, the correct ship-to address does not seem to show on the Invoice. It shows correctly on the Sales Order, Shipment Order, and Package, just not the Invoice. This is a problem, because the company being
                                  • Add Attachment Support to Zoho Flow Mailhook / Email Trigger Module

                                    Dear Zoho Support Team, We hope you are well. We would like to kindly request a feature enhancement for the Mailhook module in Zoho Flow. Currently, the email trigger in Zoho Flow provides access to the message body, subject, from address, and to address,
                                  • Zoho Invoice Customer Login Portal

                                    Are there any plans for a customer portal to Zoho Invoice, ala Freshbooks?  I would like customers that I invoice to be able to login to review invoices and invoice history.  I have not switched from Freshbooks for this very reason.
                                  • the custom domain forwards by default to the old career site / how to switch it off??

                                    dear friends, how to switch off the old version of the career site?? The set up custom domain forwards directly to the old site, so that I cant publish it... Any ideas? Thank you! KR, Victoria
                                  • Preserve Ticket Issue Mapping When Migrating from Jira to Zoho Projects

                                    Hello Zoho Projects Team, We hope you are doing well. We are currently exploring a full migration from Jira to Zoho Projects, and we identified a critical limitation during the migration process involving Zoho Desk integration. Current Situation: We use
                                  • Hotmail is STILL blocking the zoho mail IP

                                    Greetings, as I already mentioned in my last message, my Zoho IP has been blocked by Hotmail for more than 15 days. Although someone said that the issue was "solved," it still isn't, and this amount of time seems neither normal for a "serious" company,
                                  • Recording Shopify/Amazon fees in Zoho Books - Zoho Inventory

                                    We are currently flushing out the connections between Shopify/Amazon and Zoho Inventory. For other users of Zoho Books - Zoho Inventory, where and at what point do you record the merchant fees associated with theses channels? I have gotten mixed responses
                                  • Pre-fill webforms in Recruit

                                    I don't want to use the career site portal (as I have my own already), but I would like to direct users to the application forms for each role, from my website job pages. Is there a way to pre-fill fields in Recruit application forms, so that I only have
                                  • This user is not allowed to add in Zoho. Please contact support-as@zohocorp.com for further details

                                    Hello, Just signed up to ZOHO on a friend's recommendation. Got the TXT part (verified my domain), but whenever I try to add ANY user, I get the error: This user is not allowed to add in Zoho. Please contact support-as@zohocorp.com for further details I have emailed as well and writing here as well because when I searched, I saw many people faced the same issue and instead of email, they got a faster response here. My domain is: raisingreaderspk . com Hope this can be resolved.  Thank you
                                  • Client Portal ZOHO ONE

                                    Dear Zoho one is fantastic option for companies but it seems to me that it is still an aggregation of aps let me explain I have zoho books with client portal so client access their invoice then I have zoho project with client portal so they can access their project but not their invoice without another URL another LOGIN Are you planning in creating a beautiful UI portal for client so we can control access to client in one location to multiple aps at least unify project and invoice aps that would
                                  • Function #8: Add additional charges to invoices

                                    Here goes one of the highly sought-after custom functions in Zoho Books. If you find yourself needing to apply additional charges to customers on their invoices (say credit card surcharges, or fuel charges applicable to customers from a certain region,
                                  • Taxes Payable Adjustment

                                    I am from Canada and I need to make an adjustment to my Taxes Payable (HST) account.  Basically I need to take a portion of the amount within Taxes Payable and expense that portion to another account.  The adjusting entry would like like the following:
                                  • ASAP Widget Not showing "My Tickets"ed

                                    Hello Team, I have created a ZOHO ASAP Widget and embedded to my portal app.clearvuiq.com , widget renders ok and I can open tickets from widget. However I want my opened tickets to be visible in the widget. How can I achieve that?
                                  • Bug Causing Major Sync & SO Access Failures in Zoho POS

                                    We are experiencing critical and recurring issues in Zoho POS that all trace back to role-permission handling defects in the latest POS app version. These issues directly affect syncing, login ability, and Sales Order access for role-restricted users
                                  • Add Zoho Forms to Zoho CRM Plus bundle

                                    Great Zoho apps like CRM and Desk have very limited form builders when it comes to form and field rules, design, integration and deployment options. Many of my clients who use Zoho CRM Plus often hit limitations with the built in forms in CRM or Desk and are then disappointed to hear that they have to additionally pay for Zoho Forms to get all these great forms functionalities. Please consider adding Zoho Forms in the Zoho CRM Plus bundle. Best regards, Mladen Svraka Zoho Certified Consultant and
                                  • How to view CRM Sales Orders in Desk

                                    What's the usual way to view all CRM sales orders linked to a contact, when viewing a ticket in Desk? I don't want to have to open a new tab to see the order in CRM. And the Desk CRM sidebar doesn't seem to be configurable. Would I have to use an extension
                                  • Kaizen #219: Actions API - Webhooks APIs - Part 1

                                    Hello all!! Welcome back to a fresh Kaizen week. In the previous weeks, we covered Workflow Rules APIs, Actions APIs - Email Notification APIs, Tasks Update API, and Field Update API. This week, we will continue with another Actions API - Webhooks API
                                  • Zoho Books Extension: What Happens If Custom Fields Already Exist?

                                    When developing Zoho Books extensions, what happens if the target Zoho Books organization already has a custom field with the same API name as one defined in the extension? I’m asking because we originally created an on-Books version of this functionality,
                                  • Zoho Books Extension: What Happens If Custom Fields Already Exist?

                                    When developing Zoho Books extensions, what happens if the target Zoho Books organization already has a custom field with the same API name as one defined in the extension? I’m asking because we originally created an on-Books version of this functionality,
                                  • Pricing Strategies: #3 Services never Stop with just Plans

                                    "Hey, while you're here, could you also take a look at the vegetable patch?" Aaron hears that line almost every week. He runs a small gardening service, the kind where customers subscribe to a simple monthly plan that includes basic maintenance, mowing,
                                  • Cropping Photos for Zoho Sites

                                    Hi, I'm wondering if there is a built in crop tool for zoho sites for my photos so I can crop them and see what the crop looks like on the site?
                                  • Deluge scripts

                                    Why is there not a search function to make it easier to find the script of interest when modifications are required.
                                  • bulk edit records and run internal logic

                                    hi there is few logics in manner "it this than that" logics work well when i edit entry openning it one by one (via workflow "on add/edit - on success" , for custom field "on update/on user input") but when i try bulk edit records - logic does not work.  how can i turn on logic to work as programmed - for mass editing records via bulk edit?
                                  • WebDAV / FTP / SFTP protocols for syncing

                                    I believe the Zoho for Desktop app is built using a proprietary protocol. For the growing number of people using services such as odrive to sync multiple accounts from various providers (Google, Dropbox, Box, OneDrive, etc.) it would be really helpful
                                  • Next Page