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If you’re seeing an “invalid_client” error, it usually means that your application isn’t able to properly authenticate with the server. This happens when the credentials you’re sending—like your client ID and client secret—don’t match what the system recognizes.
The first thing to do is check your credentials carefully. Make sure you’re using the exact client ID and client secret that were provided when you set up your application. Even tiny typos or extra spaces can prevent successful authentication, so review them closely.
Next, take a look at how you’re including the credentials in your request. Depending on how the system is set up, you might need to add them to the authorization header or include them in the request body. Double-check the format and make sure everything is properly encoded.
It’s also a good idea to confirm that your application is fully activated and in good standing. Sometimes there’s a short delay after creating an app before it’s ready to go, so ensure everything is set up correctly on that end.
If you’ve recently regenerated your credentials, verify that you’re using the most recent ones. Using outdated credentials can cause authentication issues.
If you’ve checked all these points and still get the error, it’s best to contact customer support. They can look into your account and help identify any restrictions or technical problems that might be causing the issue.
Remember, resolving this usually comes down to reviewing your credentials and how they’re used in the request. Taking the time to double-check these details often helps get things working smoothly.
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