Build a Power Apps IT Help Desk Ticketing System with Batch Record Retrieval

When an internal IT team starts with a simple ticket app, everything looks great at first. A basic Canvas app connected to a SharePoint list works well for a few hundred records; the support team can submit and track issues, and the whole solution feels lightweight and easy to maintain.

Then the ticket volume grows. I have seen this happen in small companies and large departments alike. Once the list gets bigger, the app starts slowing down, the Gallery takes longer to load, and users begin asking why older or filtered tickets are missing. That is usually the point where a basic list-driven design needs a better data-loading approach.

In this tutorial, I will show you how to build a Power Apps IT Help Desk Ticketing System with Batch Retrieval for SharePoint so the app stays responsive even when your ticket list grows into the thousands.

Why build this as a Canvas app with SharePoint

For many internal support teams, Power Apps and SharePoint are still the fastest way to build a working help desk solution. You already have Microsoft 365, your users already sign in with the same account, and the SharePoint connector is easy to use in a Canvas app.

I usually recommend this setup for teams that want a practical internal app without the overhead of a full service desk platform. A SharePoint list stores the tickets, the Canvas app handles the front-end experience, and Power Automate takes care of the heavy lifting when the app needs to retrieve records in batches or run related automation. If you are new to this setup, you can also review how to create a Canvas app from a SharePoint list in Power Apps, what a SharePoint list is, and the main Power Apps tutorials hub.

The important thing to understand here is delegation. Delegation means Power Apps sends supported filters and sorts back to the data source instead of pulling only a limited number of rows into the app. When a formula is not delegable, Power Apps processes only part of the data locally, which is why large ticket lists can become unreliable. That is one reason I prefer batch retrieval in help desk apps instead of binding the gallery directly to thousands of SharePoint rows.

What this ticketing system will do

In this example, we will build a help desk app for a company with around 200 employees and a small internal IT team. Employees submit issues such as laptop problems, software access requests, VPN failures, and printer issues. The support team opens the app, views the latest tickets, updates the Status, changes Priority, and adds support comments.

This solution includes:

• A SharePoint list to store ticket records.
• A Canvas app to display tickets in a paged Gallery.
• A Power Automate flow to retrieve records in batches from SharePoint.
• A Next and Previous navigation model for loading tickets page by page.
• Support for Choice columns such as Category, Priority, and Status.
• A collection-based approach so the app feels faster for end users.

If you later want to improve the user experience, you can also apply ideas from Power Apps gallery control examples, Power Apps gallery filter techniques, and filtering a Power Apps gallery from a search box.

Build a Power Apps IT Help Desk Ticketing System

Now I will show you how to build a Power Apps IT Help Desk ticketing system.

Create a SharePoint list

Start by creating a SharePoint list named Tickets. I like to keep the schema simple in the beginning and add only the columns that the support team truly needs on day one.

Here is a practical column setup:

Column Name	Type	Purpose
Title	Single line of text	Default SharePoint title field
IssueTitle	Single line of text	Real ticket subject
Description	Multiple lines of text	Full issue details
Category	Choice	Hardware, Software, Access, Network
Priority	Choice	Low, Medium, High, Critical
Status	Choice	New, In Progress, Resolved, Closed

In many projects, I hide the default business meaning of Title and just use it as a secondary text field or mirror it with the issue title. If you want to clean up SharePoint forms later, you can review SharePoint list column setup ideas, SharePoint indexed columns, and SharePoint list view threshold guidance.

I strongly recommend indexing the fields you use in sorting and filtering, especially ID, Status, and AssignedTo. I have found that many performance complaints start in SharePoint long before they show up in Power Apps.

Pro Tip: I always think about filtering before creating the list. If your IT team will search by status, assignee, or date, index those columns early. It saves a lot of trouble later when the list grows.

Build the Canvas app

Now create a Canvas app and connect it to the Tickets SharePoint list. If you want a refresher, creating a Canvas app from a SharePoint list covers the basic connection pattern.

I usually create one main screen for the support team with:

• A header row with ticket column labels.
• A vertical Gallery to show paged ticket records.
• A Next button and Previous button.
• Optional filter controls for Status, Priority, or keyword search.
• A form screen for creating or editing a ticket.

For the main ticket gallery, bind the Items property to a collection instead of directly to SharePoint. That is the key design decision here. Rather than doing something like this:

SortByColumns(Tickets, "ID", SortOrder.Descending)

we will load the data into a collection named colITHelpDeskTicketsDataUP and show only the current page:

LastN(
    FirstN(
        SortByColumns(
            colITHelpDeskTicketsDataUP,
            "ID",
            SortOrder.Descending
        ),
        varPage * 8
    ),
    8
)

This formula sorts the collection by ID in descending order, takes all rows up to the current page size, and then keeps only the last 8 rows for the visible page. If you want to understand the pieces separately, the following articles are useful: Power Apps gallery pagination, Power Apps first function, CountRows in Power Apps, and displaying a Power Apps collection in a gallery.

Set your screen’s OnVisible property like this:

Set(varPage,1)

That resets the page number whenever the screen opens.

Create the Power Automate flow for batch retrieval

This is the part that makes the app scalable. Instead of asking Power Apps to pull the whole SharePoint list, we let Power Automate fetch a small batch and return it back to the app.

Create an instant cloud flow triggered from Power Apps (V2). Add one text input called text. This input will hold the SharePoint REST API path coming from Power Apps.

Then add the Send an HTTP request to SharePoint action. Configure it like this:

• Site Address: your SharePoint site
• Method: GET
• Uri: @triggerBody()[‘text’]
• Headers:
  • Accept: application/json;odata=verbose
  • Content-Type: application/json;odata=verbose

This action calls the SharePoint REST API directly. A REST API is a web-based interface that lets one service request data from another using a structured URL. In this case, Power Automate requests exactly the ticket rows we want, instead of loading everything through the Power Apps connector. If you need to understand the broader pattern, see REST API in Power Automate, get all SharePoint list items using REST API pagination in Power Automate, and SharePoint list data to Power Apps using Power Automate.

Now add a Response action with these outputs:

• ticketsdata
• lastid
• nextpage

The flow now returns three important things:

• The current batch of ticket rows.
• The last ticket ID from the batch.
• The next page reference from SharePoint.

That is enough for Power Apps to understand whether more records exist.

Load the first batch in App OnStart

In the app OnStart, initialize the first batch and store it in a collection.

The ParseJSON function converts the JSON string from Power Automate into a Power Apps table structure. Then ForAll loops through the rows and builds a cleaner record format for the app. If you want to go deeper into this pattern, review Parse JSON in Power Apps, Power Apps collection basics, create collection from SharePoint list in Power Apps, and Power Apps ForAll function.

Pro Tip: I have found that ParseJSON works best when I keep the returned payload focused. Only select the columns you truly need. That keeps the app cleaner and reduces formula headaches later.

Add Next and Previous paging buttons

Now let’s wire the paging buttons. The Previous button is simple:

If(
    varPage > 1,
    Set(varPage, varPage - 1)
)

This just moves one page back if the current page is greater than 1.

The Next button does more work. It checks if the current collection already has enough rows for the next page. If not, it calls the flow again to fetch the next batch.

This pattern works well because the app loads just enough rows for the next screen of data. It does not waste time pulling thousands of tickets at once.

Things to Keep in Mind

• Delegation limits: Do not bind a large Gallery directly to the full SharePoint list when you expect thousands of tickets.
• Indexed columns: Index fields like ID, Status, and AssignedTo so SharePoint can handle filters more efficiently.
• Choice column shape: Choice columns return records, so you often need Status.Value instead of plain text.
• Collection size: Keep batch size practical. I usually start with 8, 20, or 50 depending on the screen layout and user needs.
• Environment setup: Build and test this app in a separate development environment before moving it into production. You can also use environment variables in Power Platform to simplify deployment.
• Future scaling: If ticket complexity grows a lot, review Power Apps Dataverse vs SharePoint list and migrate SharePoint Online list to Dataverse.

Frequently Asked Questions

In this guide, we built a Power Apps IT Help Desk Ticketing System with Batch Retrieval for SharePoint using a Canvas app, a SharePoint list, and a Power Automate flow to load records in batches. For most internal support teams, this is the best approach when you want to stay inside Microsoft 365, keep the solution simple, and still handle growing ticket volume without slowing the app down. I hope you found this article helpful.

You may also like:

• Power Apps gallery pagination
• Parse JSON in Power Apps
• Power Apps Patch function with examples
• Get all SharePoint list items using REST API pagination in Power Automate