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Support Home FAQ PayPal Why am I getting an Error Log with "Program/Area: payPalUtil.accessToken" and "Subject: HTTP Callout invalid_client"

Why am I getting an Error Log with "Program/Area: payPalUtil.accessToken" and "Subject: HTTP Callout invalid_client"

This can be because of an incorrect setup or due to a temporary outage from PayPal. Please check with PayPal support and try again in for example 30 minutes. If the issue persists, then proceed with the instructions below.

For setup, this means either of the below is incorrect:

Environment (needs to be Sandbox or Production)
PayPal Username / Password

Please review the setup procedure for PayPal. Pay Particular attention to the Environment (Production/Sandbox) inside PayPal setup

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Updated at April 14th, 2025