Hard 120063 - The Mailer ID is required on UPS SurePost shipments [Solution]

Modified on Thu, 04 Jul 2019 at 06:16 PM

When processing an order, you might run into the "Hard 120063 - The Mailer ID is required on UPS SurePost shipments" error.



This error relates to a misconfiguration of your UPS source account.

Reach UPS support or representative and request they enable SurePost for the account you're trying to process your order through.

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