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

    Nederlandse Hulpbronnen


      • Recent Topics

      • Updating Analytical Fields Data

        Dear Zoho team, I'm having an issue with the recently added fields in both Analytical Desk and Analytical. How can I generate the data in Analytical when new fields are added? https://analytics.zoho.com/workspace/2436819000000007005/edit/24368190000

      • My Zoho mail stopped receiving or sending emails about 3 hours ago

        Its a pop 3 account. The emails get into the actual mailbox on the server and I can send emails directly from the server, but they are no longer in Zoho, in neither of my Zoho accounts. All green ticks under Mail Accounts under Settings

      • Zoho Cliq not working on airplanes

        Hi, My team and I have been having this constant issue of cliq not working when connected to an airplane's wifi. Is there a reason for this? We have tried on different Airlines and it doesn't work on any of them. We need assistance here since we are constantly

      • Request to Recover Deleted Task List – Project ID: RIV-MOD-10722

        Hi Zoho Team, I hope this message finds you well. My Zoho task list associated with Project ID: RIV-MOD-10722 appears to have been deleted. When I clicked on the task link from the email notification, I received the following message: "Task has been deleted

      • Email Insights included in Bigin emals are marked as SPAM everywhere

        Today I noticed that email recipients who use Office 365 never receive emails sent from Bigin. Further examination showed that all Email Insights links in email headers are marked as spam/phishing by Office 365. Example screen included. The problem is

      • How do I import Connected Records for a Deal?

        Can you point me to an example of the CSV file that would add related records to an existing CRM Deal? I imported a Deal, then tried importing a connected record using a unique ID that references the Deal ID, but it doesn't attach it to the Deal rec

      • File Upload Field in Zoho Forms Not Updating Existing File in Zoho CRM

        Hi everyone, I’m trying to understand the behavior of a file upload field mapped from Zoho Forms to Zoho CRM. Scenario There is a File Upload field in a Zoho CRM module. A Zoho Form also has a File Upload field, which is mapped to that CRM field. When

      • Zoho Training

        Greetings! I am trainer. My focus area is Project Management and MS Project. I have used Zoho CRM to a good extent. Though, I was interested in using ZOHO projects, as there were no live projects, I could not take it up for studies. Recently a client

      • Detailed list of scoring rules in Zoho CRM

        Good morning Zoho community, warm greetings The reason for my message today is that I have a problem with my CRM, which I will explain below: Our organization has scoring rules designed to rate our potential customers or leads in the application based

      • How to create a summary document from Projects details

        Hi, Our team is creating many projects inside Zoho Project. When closing a project, they write a summary document containing data from the projects it-self (understand project budget, customers, etc...), and editable (ie the document is either a Writer

      • Host in US Data Centre

        I humble apply to be registered on US Data centre

      • convert the project to templet

        i have some deployment ME product for different customer , i need to create a fixed template for use it rather then keeping creating this template every time

      • Best practices for managing Project Charters, Business Case and RAID logs within Zoho?

        Hello everyone, I’m currently refining our PMO setup within Zoho Projects and I’m curious how others are handling high-level governance documentation. We’ve been using the standardized Project Charter, Business Case and RAID frameworks from projectmanagertemplate.com

      • Work Orders / Bundle Requests

        Zoho Inventory needs a work order / bundle request system. This record would be analogous to a purchase order in the purchasing workflow or a sales order in the sales cycle. It would be non-journaling, but it would reserve the appropriate inventory of

      • Izettle or Sumup Integration for Zoho Books.

        The Stripe & Square clearing works great in Zoho Books. Any further integrations planned in the future for Izettle or Sumup? These card processors are very common for taking payments with a card reader.

      • Trying to access records in a custom module in Zoho Desk and not having luck

        I've built a custom module in Zoho Desk and am using a custom function to query the records in the module and I'm not having any luck. The only way I have found to retreive a record is by getting it by its recordID (the long zoho assigned one). The function

      • ZOHO Books Smart Accounting Software for Travel Agency

        Dear Travel partner, Contact for Travel Agency Accounting Setup & Training Vansh Travel (ZOHO Books Authorised partner) Email: info@vanshtravel.com Mo: +91 98984 95155 Please find PDF   

      • 452 Mailbox delivery restricted by policy error

        We have been testing Zoho desk for about a week now and have been forwarding emails in via an Exchange Online Mail flow rule without issue until yesterday. Suddenly yesterday morning we started getting the vast majority of the emails stuck in Pending

      • Send Email reply on behalf of Agent

        Hi, When using the send email reply via the API I can set the reply on behalf of the customer by using impersonatedUserId in the header of the API call. Is there a way to do this for Agents too? I need to be able to send an email reply on behalf of an

      • Sharing Tickets to a team within a department

        Hi there, We have a need for one department to be able to share tickets to a specific team within a department, I'm wondering if this is possible? All the shared tickets are going into the 'Shared Tickets' view for the whole department but is there a

      • Automatic Department and Employee Sync Between Zoho One and Zoho People

        Dear Zoho Support, I'm writing to propose a valuable feature request that would streamline data management and improve user experience within the Zoho ecosystem: automatic synchronization between departments and employees in Zoho One and Zoho People.

      • Maximum limit of bank accounts

        I'm currently setting up Zoho Books in order to migrate at the start of our next financial year (April) and while adding bank accounts I've tried to add a second account from the same bank and receive an error about the maximum limit of bank accounts.

      • Unable to load a specific image

        Hi I am trying to upload an svg file, which reports that there is "a problem with the file", but does not say what sort of problem. I can't find anything which says which files are supported, so it may be it does not support svg. (which would be a real shame) The file itself will open in either Firefox or Chrome without problem. For the moment I am using a png file, which does not zoom well of course. David

      • Why does the Address field show the wrong map location even with a correct Pincode?

        I am noticing an issue with the Address field map in Zoho Creator. When I enter a city name that exists in multiple locations within the same state, the map sometimes points to the wrong area even if I have entered the correct Pincode. Currently, it seems

      • Archive Option in Conversation View

        Hello, I have a suggestion\request to add an "Archive Thread" button in conversation view of Zoho Mail. The best suggestion I have is to put an "Archive Thread" button next to the "Label Entire Thread" button in conversation view. Most users don't just

      • Outlook/Hotmail Blocking Zoho SMTP IPs (S3150)

        We are currently facing a serious deliverability issue with Zoho SMTP while sending transactional OTP emails for our production application. Emails sent to Outlook / Hotmail addresses are being rejected with the following error: 550 - 5.7.1 Unfortunately,

      • Outlook is blocking incoming mail

        Outlook is blocking all emails sent from the Zoho server. ERROR CODE :550 - 5.7.1 Unfortunately, messages from [136.143.169.51] weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3150). It looks

      • Zoho Social API for generating draft posts from a third-party app ?

        Hello everyone, I hope you are all well. I have a question regarding Zoho Social. I am developing an application that generates social media posts, and I would like to be able to incorporate a feature that allows saving these posts as drafts in Zoho Social.

      • Temporarily rate limited due to IP reputation.

        We have suddenly started receiving the following Mail Delivery Status Notification: Diagnostic-Code: 4.7.650 The mail server [136.143.184.12] has been temporarily rate limited due to IP reputation. For e-mail delivery information, see https://aka.ms/postmaster

      • IMPORTANT: It doesn´t search for letters with portuguese characters.

        Some of my articles have for example the word "vídeo". But if I search for "vídeo" it doesn´t find them. If I search for "video" it does find them. Idealy, it should find the articles either way. But if I have to choose, it would be better to find the

      • IMPORTANT: It doens´t show full article name on search - Should add line break

        When we search for articles, it doesn´t show the full name. There should be a line break so the user can see the full article name, otherwise the user can´t know if that´s the article he/she is looking for. This is very important, otherwise the user has

      • Zoho Books - Payment Gateway - Revolut

        Hi Books Team, My feature request if to include the popular platform Revolut as a payment collection option on invoices in Zoho Books. Please upvote if you are also looking for this option.

      • Zoho Books | Product updates | January 2026

        Hello users, We’ve rolled out new features and enhancements in Zoho Books. From e-filing Form 1099 directly with the IRS to corporation tax support, explore the updates designed to enhance your bookkeeping experience. E-File Form 1099 Directly With the

      • Kaizen #233 - Generating AI-powered Follow-up Emails Using CRM Functions and Widgets

        Hey everyone! Welcome back to another interesting post in the Kaizen series! Sales teams regularly capture interaction notes in CRM after speaking with prospects. However, drafting a follow-up email that reflects the conversation context can be repetitive

      • Connect Bank in Zoho Books

        Can I connect UOB or Ariwallex in Zoho Books?

      • Using MPN across multiple SKUs and inventory tracking

        I have several different SKU's that share a common MPN and would like to track inventory by MPN. SKU1 has MPN1 assigned SKU2 has MPN1 assigned Here is an example If I start with 5 of MPN 1 in stock I want each SKU1 and SKU2 to show as 5 in stock, If I

      • Marketing Tip #1: Optimize item titles for SEO

        Your item title is the first thing both Google and shoppers notice. Instead of a generic “Leather Bag,” go for something detailed like “Handcrafted Leather Laptop Bag – Durable & Stylish.” This helps your items rank better in search results and instantly

      • Feature Enhancement Request – Text Formatting Options in Item Description (Zoho Books/Quotes Module)

        Dear Zoho Development Team, Greetings from Radiant360 Integrated Technical Services LLC. We would like to bring to your attention a functional limitation we've encountered within the Item Table / Quote Description section of Zoho Books (and Zoho CRM Quotes).

      • ZOHO Books Query

        Good day, Can someone please advise. I recently migrated from ZOHO Invoice to ZOHO Books. No that I want to use the inventory on Books I cant as all my items have transaction history. The person I spoke to at ZOHO said I need to create a new Company profile

      • Best way to schedule bill payments to vendors

        I've integrated Forte so that I can convert POs to bills and make payments to my vendors all through Books. Is there a way to schedule the bill payments as some of my vendors are net 30, net 60 and even net 90 days. If I can't get this to work, I'll have

      • Next Page