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The API returned an error code [400] invalid_grant - Grant credentials are invalid

  • March 1, 2024
  • 1 reply
  • 448 views

Hi Team,
I am getting The API returned an error code [400] invalid_grant - Grant credentials are invalid error while connect to BOX .
Authorization method : OAuth 2.0 (Server Authentication) with Client Credentials Authorization
My account is a paid account

    1 reply

    rbarbosa Box
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    • rbarbosa Box
    • Developer Advocate
    • March 11, 2024

    Hi @bhavesh , welcome to the forum…

    9 out of 10 times, folks, including myself, forget to send the CCG or JWT application to authorization, which might explain your situation.

    In the developer console for your application, locate the Authorization tab and click the review and submit button. It looks like this:

    image

    Once you’ve done that, the administrator needs to approve the application. In the admin console, navigate to apps, and locate the custom apps amanager. From there authorize the application. Looks something like this:

    image

    At first glance and with the information you provided, this should do it.

    Let us know.

    Best regards

    Rui

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