7 Common API Error Examples and Use Cases

As software becomes more complex, companies have started integrating Application Programming Interface (API) into their existing software projects. API essentially serves as a medium to connect these projects with the computer. They offer a ton of benefits to companies, which also help increase their revenue.

Building a business communication API is relatively easy and does not take much time. However, creating one that is more secure can be slightly more challenging. It is not surprising that mistakes and errors can happen.

Keep reading this guide to ensure that such mistakes don’t happen that can impact the user experience. We highlight the most common API error examples that communication API companies should be aware of.

Common API Error Examples to Avoid:

Here’s a list of the most common mistakes in API that you should avoid, identify, and a fix should you come across them:

1. Using HTTP:// Instead of https://

This might be one letter, but it is crucial in terms of security and may cause a lot of trouble. This is because some APIs only support HTTPS. Even if it supports both, you might still experience some errors. For example, you might get informative errors that advise you to access the endpoints with HTTPS rather than HTTP.

Additionally, some APIs stop supporting HTTP, so you need to stay updated on all the changes.

2. Unexpected Error Codes

There is a chance that unexpected error codes might arise with a lack of information regarding what went wrong. This may leave developers confused and unable to figure out what went wrong. This error can be avoided by installing software or programs that can concisely identify these errors and give you the required information.

Hence, when testing and monitoring APIs, you should stay vigilant of these error codes and not assume every code is good.

3. Out-Dated Caching

Caching is vital for the user experience and the internet. When you have all of the information in one public profile, users can access it anytime without overloading the server. Improper implementation of caching can often become a nuisance and hindrance.
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This is why you should test the API as the user. This will help you effectively search for errors and approach with caution. As a result, caching mistakes will be minimized, and the user experience will be enhanced.

4. Sending Invalid Authorization Credentials

If a certain request is failing, the developer needs to ensure that the code is correct words are being used. For example, such as WhatsApp business API in Singapore, specific APIs require you to add authorization to the headers for each request.

You should pay close attention to the words and the construction of the Authorization headers.
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5. Not Specifying Content-Type or Accept Header

Content-Type and Accept headers negotiate the type of information transmitted between the client and server. Some APIs might accept requests that don’t contain headers, but most are much stricter and will deny.

Instead, they would return a 403 error and require you to resubmit the request with correct headers. This alerts the server and tells them what information the client is sending and what type of format should be received and accepted. This issue can become even more difficult if you are testing your API with various tools.

6. Using the Wrong HTTP Method

While this might be an easy task, many people commonly make this error. This can happen for several reasons, including the tools you are using.
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Alternatively, we might follow the wrong method, including using the incorrect HTTP method.

It is important that you have to stay consistent throughout your API regardless of the method you choose. You should also have correct and updated documents. This way, your users will not run into any errors, and neither will you during the making of the API.

7. Invalid Fields

When you pass data to API and do not receive any form, you must provide it with everything the API expects. And in doing so, you should ignore any of the data it does not support. You should ensure that you always pass the correct data to the API.
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Otherwise, you will get a message that you are making an error.

Hence, to avoid invalid fields, always double-check the data before passing the data, whether or not it is for transactional email API or any other type.

Wrapping Up

Working with APIs can be daunting, especially if you are doing it first. However, you can successfully create an effective API with experience and learn about these errors. By resolving or avoiding any of these mistakes, you will be powering your application with APIs and becoming a better OTP service provider.

If you require more information or need help, visit MSG91 today!

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