Building extensions #5: Creating custom connections for extensions

Building extensions #5: Creating custom connections for extensions

In our previous post, we discussed the significance of connections, identified their types, developed a predefined connection, and demonstrated how it can be integrated with Zoho Books using an example. In this post, we'll walk through the process of creating a custom connection using an example.

Custom connections facilitate the integration of applications with Zoho Books by aiding in configuring the required application's connection manually by providing application-specific details. Let's go over the steps involved in configuring custom connections in detail using a use case scenario.

Use case

Let's say an organization uses Zoho Books to manage its financial operations. To improve sales for the organization, one must contact and communicate with multiple clients, as well as check in with vendors on a regular basis to remain up to date on new products on the market, take demos, and assess whether the products need to be brought into the organization.

In these cases, it is best to schedule appointments with clients and vendors in order to conduct business in an organized manner. This can be easily performed by integrating an appointment scheduling software so appointments can be scheduled with a click.

For our demo purpose, let's consider Zoho Bookings as the appointment scheduling software. Since it is not available under the default list of services in predefined connections, let's create a custom connection to achieve this.

Steps to create a custom connection
  • Go to Sigma and access your workspace.
  • Enter the developer portal of the Zoho Books extension you're creating a connection for.
  • Navigate to the Build section and click Connections.
   
  • Click New Connection to create a new connection.
NotesNote: Alternatively, you can use the View All option under a connection type to see all the services under that particular connection type and begin creating connections.
     
  • Choose Custom Services and click Create Service.
   
  • Provide the details of the service.
➤ Enter a name for the service, and the service link name will be immediately filled in.
➤ Choose the authentication type that corresponds to the authentication mechanism supported by the service for which you are building the connection. These details will be available as part of the service's API documentation. For our example, we'll use OAuth2, because Zoho Bookings supports it as an authentication mechanism.         
  
➤ The remaining fields to be configured for the service differ based on the authentication type used. In our case, the parameter type is Header, and the grant type is Authorization Code.
   
➤ Please refer to the table below for the values that need to be configured in the remaining fields.
Note: Register the service in the Zoho Developer API console to get the client credentials.
  • Finally, click the Create Service button.
  
  • The service is created successfully. Click Create Connection to create a connection for this service.
  • Provide the connection details, select the scope, and click Create and Connect.
 
  • Proceed with the flow to accept the scopes and authorize the connection.
 

The connection is now authorized, and you'll be directed to the connection details page. This page will also contain sample code in both Deluge and JSON formats that can be used to utilize this connection as part of your extension components. Depending on which component you want to invoke the connection in, you can use the appropriate sample code format.

Additionally, a predefined connection for Zoho Books is created to perform operations on Zoho Books data to implement our use case. Get more information on predefined connections in our previous post.

Now, in accordance with our use case, let's create a custom button that includes this connection to schedule appointments (in Zoho Bookings) with clients and vendors using Zoho Bookings with a single click (from Zoho Books).
We require two custom fields for our logic, one for setting the meeting start time with the client or vendor, and the other to display the Bookings appointment calendar link once the meeting is scheduled.
  • Create custom fields for the Customers and Vendors module by selecting Preferences > Customers and Vendors > Field Customization > New Custom Field.
 
  • Next, create a custom button and include the logic to schedule an appointment.
  • Create a custom button for the Customers and Vendors module by selecting Preferences > Customers and Vendors > Custom Buttons > New.
InfoBook meeting custom button function Deluge code - Please find code snippet as an attachment in the post
  • In the above code, the Get Contacts API of Zoho Books is invoked through the InvokeURL method using the predefined connection to get the contact/customer details for whom the appointment has to be scheduled in Zoho Bookings. Refer to this post to get complete details on the parameters required to call the InvokeURL method.
  • From the API response, the required details are fetched from which the start time (custom field data) is formatted to the way required by the Zoho Bookings API.
  • Next, the Zoho Bookings API to get the service ID and staff ID are invoked consecutively through the InvokeURL method using the custom connection created.
  • The Book appointment API is used to schedule the appointment using the service ID, the staff ID obtained from the Zoho Bookings API, and customer details obtained previously via the Zoho Books API.
  • Finally, using the update contact Zoho Books API, the Zoho Bookings calendar URL is updated in the custom field created to display the calendar booking URL.
We've now completed the extension setup for our use case.

After testing and publishing the extension, as per our use case, you can book a meeting for a Zoho Books customer through Zoho Bookings and have your Zoho Bookings calendar reflected inside Zoho Books as well.

z
This is an example demonstration of the benefits of using a custom connection in a Zoho Books extension. This is a versatile use case that may even be used to schedule an internal meeting with your Zoho Books teammates who are working on a project. Similarly, this use case can be enhanced and implemented based on your needs.

We hope you found this information useful. Keep following us for more tips.

SEE ALSO




        • Recent Topics

        • Request to Remove LinkedIn Verification from My Emai

          I would like to submit a complaint regarding my Zoho Mail account. I previously used this email address to verify a LinkedIn account, but that LinkedIn account has now been closed. I need to remove or cancel the verification associated with the closed

        • Pin multiple columns and adjust column widths in CRM subforms

          Hello all, Subforms act as secondary forms or tables in which you can associate multiple line items to a primary record and thereby ensure more structured and comprehensive data organization. We've made some recent enhancements to subforms. Here's what's

        • Removing To or CC Addresses from Desk Ticket

          I was hoping i could find a way to remove unnecessary email addresses from tickets submitted via email. For example, a customer may email the support address AND others who are in the helpdesk notification group, in either the TO or CC address. This results

        • From Zoho CRM to Paper : Design & Print Data Directly using Canvas Print View

          Hello Everyone, We are excited to announce a new addition to your Canvas in Zoho CRM - Print View. Canvas print view helps you transform your custom CRM layouts into print-ready documents, so you can bring your digital data to the physical world with

        • Announcing Kiosk 1.1 - Customize screen titles, configure new fields & actions, use values from your Kiosk to update fields, and more.

          Hello all We are back again with more enhancements to Kiosk. So what's new? Enhancements made to the Components Add titles for your Kiosk screens and adjust its width to suit your viewing preferences. Three new fields can be added to your screen: Percentage,

        • CRM Percent custom fields: When will it show the % symbol and behave like %?

          1. Actually Percent custom fields fail to show the % symbol. 2. When in formulas Percent fields work like number: 100 x 5% = 5 ideal world 100 x 5% = 500 what happens actually 3. When importing Percent fields the % symbol has to be removed and the data

        • Introducing Color Coding of Picklist Values

          Dear Everyone, Greetings!! Zoho CRM is uplifting the user experience. Recently, we had some notable aesthetic improvements in CRM like Kanban View UI enhancement, New List view UI enhancement, color coding of tags, and color coding of picklists in meetings.

        • Where can I find the best mail backup tool for Windows?

          Later this evening I found Mail Backup Tool in google. Actually I was looking for a solution to download/save emails to my local drive. As I had plenty of important data stored in my email account. So i was not in a mood to take this thing lightly. This made me curious to found any software which can help me to backup my data to hard drive. Then I found the above application which was like a gem. A complete email backup solution for Zoho Mail, Gmail, Yahoo Mail, Office 365 and more than 40+ email

        • Mailbox storage showing incorrect usage

          My mailbox shows 4.99 GB used out of 5 GB. However, actual mailbox usage is only around 394 MB. Trash and Spam are already empty. IMAP/POP is not enabled. WorkDrive is not in use. This appears to be a storage calculation issue. Please help to recalculate

        • Super Admin Logging in as another User

          How can a Super Admin login as another user. For example, I have a sales rep that is having issues with their Accounts and I want to view their Zoho Account with out having to do a GTM and sharing screens. Moderation Update (8th Aug 2025): We are working

        • Es posible cambiar el lenguaje de los modulos del ASAP?

          Es posible cambiar el lenguaje de estos textos? Tengo Zoho configurado en español pero aun así me muestra estos textos en ingles:

        • Option to Automatically Publish Job Openings to the Career Website via API or Workflow

          Currently, when creating Job Openings using the Zoho Recruit API, the records are successfully inserted into the system. However, there is no way to automatically publish these Job Openings to the Career Website. In the Job Opening field data, there are

        • Evaluate applicants faster: Profile Summary and Skill Sets now in Applications

          Evaluating applicants often requires switching between modules to understand their skills and background. With this update, we’ve extended two capabilities directly to the Applications module: Skill Sets and Profile Summary. You can now review applicants

        • Free webinar: How to use passkeys with Zoho Vault

          Hi everyone! Passkeys are transforming the way we sign in—making authentication safer, faster, and completely passwordless. No more memorizing complex passwords or worrying about credential theft. With Zoho Vault, you can securely manage both passwords

        • Adding Markdown text using Zoho Desk API into the Knowledge Base

          Hi Zoho Community members, We currently maintain the documentation of out company in its website. This documentation is written in markdown text format and we would like to add it in Zoho Knowledge Base. Do you know if there is REST API functionality

        • Is it possible to embed Zoho Bookmarks in the Cliq sidebar?

          Is there any way that each Zoho user can access their bookmarks (that live in https://bookmarks.zoho.eu/ which is technically a part of Zoho Mail) directly within Cliq? As a widget, or an item in the sidebar? My team does not use Mail, it uses Cliq all

        • Enhancing Zia's service with better contextual responses and article generation

          Hello everyone, We are enhancing Zia's Generative AI service to make your support experience smarter. Here's how: Increased accuracy with Qwen One of the key challenges in AI is delivering responses that are both contextually accurate and empathetic while

        • Let us add Lookup fields in the Blueprint Transitions

          We are unable to add Lookup Fields in the blueprint transitions in Zoho Desk, we wanted to make it a requirement for our workflow but since it's not available in the transition we cannot. The lookup field exists in the Layout: But it cannot be added/selected

        • How can we clear a signature field with deluge?

          I would like to clear a signature field in the Edit -> On Load. I have tried input.signature = ""; input.signature = null; clear input.signature; None of the above is working. is there any other way I am missing?

        • Online PDF Editor

          Hello Team, There is a small glitch i found when i was using your online software called "PDF Editor", There is a menu bar on right side comes when we click on 3 dots for any pdf, but that entire menu has no options to choose, that is totally blank, please

        • How do I disconnect my Salesforce integration?

          I need to integrate a different Salesforce sandbox with my Zoho form.

        • Zoho Recruit - Email Relay

          Good day, Has anyone succeeded in setting up an email relay for Office 365? If I add the details from https://support.microsoft.com/en-us/office/pop-imap-and-smtp-settings-8361e398-8af4-4e97-b147-6c6c4ac95353, I get the connection error. Regards, Eka

        • Zoho Recruit -> Exchange Online Relay

          HI! I have tried to connect Recruit to our MS 365 Exchange Online without any luck. I use this guide https://help.zoho.com/portal/en/kb/recruit/outreach/email-relay/articles/email-relay-zoho-recruit#Configuring_Email_Relay_Settings Do anyone have the

        • Error AS101 when adding new email alias

          Hi, I am trying to add apple@(mydomain).com The error AS101 is shown while I try to add the alias.

        • an issue in Zoho CRM where the workflow rule is not triggering

          H I’m currently facing an issue in Zoho CRM where the workflow rule is not triggering when a new lead is created through a webform. I’ve double-checked the criteria and field updates, everything seems fine but it still doesn’t fire. Has anyone faced this

        • 401 Unauthenticated Error – Zoho CRM to Google Sheets Integration

          Hi I'm building an Automation Function in Zoho CRM using Deluge that appends contact data from Zoho CRM into a Google Sheet whenever a new contact is created. WHAT I'VE DONE: I created a connection in Zoho CRM (Developer Hub → Connections) with the following

        • Power up your Kiosk Studio with Real-Time Data Capture, Client Scripts & More!

          Hello Everyone, We’re thrilled to announce a powerful set of enhancements to Kiosk Studio in Zoho CRM. These new updates give you more flexibility, faster record handling, and real-time data capture, making your Kiosk flows smarter and more efficient

        • Income not showing in direct bank feed

          Hi, I am trying to enter income without knowing or mentioning customer, as i am told, my client wants single or cash basis accounting but i seriously struggling......................

        • I am not able to check in and checkout in zoho people even location access allowed

          This issue i am facing in mackbook air m1, I allowed location in chrome browser and i also tried in safari but getting similar issue. Please have a look ASAP.

        • Preview future shift rotation in Shift Schedule

          Hi, What if, instead of the current behavior, the Shift Rotation feature in Zoho People allowed users to preview future shift schedules before the scheduler execution? Currently, when a shift rotation is configured (for example, monthly rotation), the

        • What do you get in Zoho ONE Free Trial?

          Zoho One is a collection of applications that work together to run a company's entire operations in the cloud. It includes more than 40 online applications and an equivalent number of mobile apps, all of which can be accessed with a single sign-on and

        • Automatically Update Ticket Status in Zoho Desk Based on Actions in Zoho Projects

          Hi Zoho Desk Team, Hope you’re doing well. We’re using the Zoho Desk–Zoho Projects integration to manage tasks related to customer tickets, and it works well for linking and tracking progress. However, there are a few important automation capabilities

        • Sign Out

          Hello, I have a doubt with Permalink. I have a view created with critera to show only the records belonging to the user who has sign in. The problem is that the different users use the same computer and some times the user login keep signed, and when I send the permalink (by email) of the view, the users enter with other login signed. Moreover the permalink view doesn�t allow to do a log out. May I add something in the permalink to request always sign in? Sorry for my English. Many thanks! Regards

        • Announcing new features in Trident for Windows (v.1.39.4.0)

          Hello Community! Trident for Windows just received a major update, with a range of capabilities that focuses on strengthening communication and simplifying workflows. Let’s dive into what’s new! Upload email attachments to WorkDrive. Until now, you could

        • Introducing Automatic Field Addition (Text Tags) in Zoho Sign

          Hello, Today we are excited to announce the general availability of automatic field addition (text tags) feature in Zoho Sign. Now, you can now add text tags in the content of your documents and Zoho Sign will automatically add the corresponding fields when they are uploaded for the signing process. For example: when you add text tags to your sales orders, new employee contracts, and NDAs, Zoho Sign will add the corresponding fields when these documents are uploaded for the signing process. If you

        • Introducing Built-in Telephony in Zoho Recruit

          We’re excited to introduce Built-in Telephony in Zoho Recruit, designed to make recruiter–candidate communication faster, simpler, and fully traceable. These capabilities help you reduce app switching, handle inbound calls efficiently, and keep every

        • Do not use isnull()

          Does not always return booleans. Can also return null. Never use this function. Just use var==null instead.

        • Write-Off multiple invoices and tax calculation

          Good evening, I have many invoices which are long overdue and I do not expect them to be paid. I believe I should write them off. I did some tests and I have some questions:  - I cannot find a way to write off several invoices together. How can I do that,

        • Splitting Transactions in Zoho Books

          I have read in past forum posts that the ability to split bank transactions would likely be implemented - it's definitely a typical accounting program feature.  I'm new to Zoho and thought I'd found nirvana until I realized this feature doesn't seem to

        • Statement Aging On Cutomer Statement

          Hello, Is it possible to put aging on customer statements? Current 1-30days 31-60days 61-90days 91-120days Over 120 days. See attached image from another accounting package. Many customers pay off a statement and clear older invoices.

        • Next Page