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How to Use Acumatica API: A Beginner's Guide

If you're an Acumatica user looking to automate tasks or integrate Acumatica with other applications, Acumatica API can help. In this beginner's guide, we'll explore Acumatica API, its use, and best practices for making the most of this powerful tool.

What is Acumatica API?

Acumatica API provides access to different functionalities of the Acumatica ERP system, such as finance, sales, and inventory. There are two main types of Acumatica API: REST API and Contract-Based API.

  • REST API: This type of API enables users to access Acumatica data via standard HTTP requests such as GET, POST, PUT, and DELETE. REST API provides a simple and flexible way to access Acumatica data, and it can be used with any programming language that supports HTTP requests.

  • Contract-Based API: This type of API is used to create and execute contracts, predefined actions that can be completed in the Acumatica ERP system.

Contract-Based API is a more robust and secure option for accessing Acumatica data and performing complex operations.

How to Get Started with Acumatica API

To get started with Acumatica API, you'll need to perform the following steps:

Step 1: Understanding the Basics of Acumatica API

Before getting started with Acumatica API, it’s essential to understand what it is and how it works. Acumatica API is a RESTful API that uses HTTP requests to interact with Acumatica ERP data. The API supports standard HTTP methods such as GET, POST, PUT, and DELETE, which makes it easy to work with developers.

Acumatica API also uses the OpenAPI specification (formerly known as Swagger) to document the API, making it easier for developers to understand how to use it. 

Acumatica provides a software development kit (SDK) that includes code samples, libraries, and tools to help developers get started quickly.

Step 2: Setting Up an Acumatica API Key

To use Acumatica API, you need to set up an API key. An API key is a unique identifier allowing Acumatica to recognize and authenticate your API requests. You can create an API key by logging into your Acumatica account and navigating to System > Manage API Keys. 

You can create a new API key and set its permissions from there.

It’s important to note that API keys should be kept secure and not shared with others. 

Additionally, it would be best only to grant the API key permissions necessary for the tasks it will perform.

Step 3: Making Your First API Call

Once you set up your API key, you can make your first API call. Acumatica API provides a wide range of endpoints that enable you to retrieve, create, update, and delete data in Acumatica. 

To make an API call, specify the endpoint and the HTTP method you want to use.

Step 4: Exploring the Acumatica API Documentation

Exploring the API documentation is essential to get the most out of Acumatica API. The documentation provides detailed information about each endpoint, including the parameters it accepts and the responses it returns. 

You can also find code samples and tutorials demonstrating using the API.

Acumatica provides a comprehensive API reference that you can access by navigating to your Acumatica instance’s endpoint, followed by /help. For example, if your Acumatica instance’s endpoint is, you can access the API reference at

Step 5: Tips for Success

Here are some tips to keep in mind when working with Acumatica API:

  • Start small: Begin by working with a few endpoints and gradually expand your usage as you become more familiar with the API.
  • Test your code: Always thoroughly before deploying it in a production environment.
  • Use the SDK: Acumatica’s SDK provides valuable resources and tools to help you get started quickly and ensure you’re following best practices.
  • Secure your API key: Keep your API key secure and only grant it the permissions necessary for the tasks it will perform.
  • Document your code: Documenting your code will make it easier to maintain and update over time.

Benefits of using Acumatica API

Integration with other systems

The Acumatica API allows you to integrate your ERP software with other systems, such as your e-commerce platform, CRM, or marketing automation tool. This integration enables you to share data between different systems and eliminates the need for manual data entry, saving you time and reducing the risk of errors.


The Acumatica API enables you to customize your ERP software to suit your business needs. You can create custom applications, automate workflows, and develop reports that provide insights into your business operations. The API also allows you to modify existing Acumatica features to fit your unique business processes.

Improved efficiency

Using the Acumatica API, you can automate repetitive tasks such as data entry, report generation, and inventory management. This automation can help improve the efficiency of your business operations and reduce the risk of errors.

Real-time data

The Acumatica API provides real-time data, allowing you to make informed decisions based on up-to-date information. You can monitor your business operations in real-time and respond quickly to any issues or opportunities.


The Acumatica API is accessible from anywhere, allowing you to manage your business operations from any location. This accessibility makes it easy for remote workers to collaborate and stay connected with the rest of the team.


The Acumatica API is designed to handle large amounts of data and can be scaled to accommodate the needs of growing businesses. As your business expands, you can easily add new features and functionality to your ERP software using the API.

Best Practices for Using Acumatica API

Working with an API can be challenging, especially for those new to software development or with limited experience working with APIs. Here are some best practices for using Acumatica API to ensure smooth integration and optimal performance:

1. Use the latest version of the API

Acumatica regularly releases new versions of its API to improve functionality and security. Using the latest API version is essential to ensure you have access to the latest features and bug fixes. Check the Acumatica documentation regularly to see any updates to the API.

2. Follow RESTful API conventions.

Acumatica API uses RESTful API conventions, meaning URLs identify resources and perform HTTP operations. Following these conventions when developing your integration is essential to ensure consistency and maintainability.

3. Authenticate using OAuth2

Acumatica API uses OAuth2 for authentication, a widely adopted industry standard. Following best practices for OAuth2 authentication is essential to ensure your integration is secure and user data is protected.

4. Use the API efficiently

API calls can be resource-intensive and can impact the performance of your application. Using the API efficiently is essential to minimizing the number of calls and optimizing the data returned in each call. Use batching and caching to improve performance.

5. Handle errors gracefully

API calls can fail for various reasons, including network, server, or user errors. Handling mistakes gracefully is essential by providing informative error messages and taking appropriate action based on the error type.

6. Test your integration

Testing is essential to the development process to ensure that your integration works as expected and meets the requirements. Test your integration thoroughly using different scenarios and edge cases to identify and address issues.


In conclusion, using the Acumatica API can significantly enhance the functionality and capabilities of your Acumatica system. Whether you want to automate specific processes, integrate with other systems, or improve your operations' overall efficiency, the API provides a powerful toolset for accomplishing these goals. 

As an Acumatica partner expert, we highly recommend exploring the API and taking advantage of its many benefits. With the tips and strategies outlined in this beginner's guide, you'll be well on your way to unlocking the full potential of your Acumatica platform. 

So don't hesitate to start today and begin experiencing the many advantages of the Acumatica API!

Contact us today for more support in Acumatica API!