How to Resolve ‘Authentication Failed’ for FedEx Realtime Rates in NetSuite?

The 'Authentication Failed' error during FedEx realtime rate calculation in NetSuite typically indicates an issue with the FedEx account credentials or status. The FedEx integration utilizes the FedEx REST API, which pulls credentials configured in the NetSuite FedEx setup.Potential causes and resolutions include:

1. Incorrect FedEx Setup in NetSuite

   Verify that all FedEx account details, such as the account number, meter number, and authentication keys, are correctly entered and up-to-date within the NetSuite FedEx integration setup.

2. Disabled FedEx Account for Realtime Rates

   The FedEx account may be disabled or restricted from accessing realtime rate services. This issue requires direct resolution by contacting a FedEx representative or FedEx support.

3. Multi-Factor Authentication (MFA) Re-registration (NetSuite 2026.1 and later)

   For existing FedEx accounts, Multi-Factor Authentication (MFA) is now required and must be re-registered after upgrading to NetSuite 2026.1 or later. Failure to re-register MFA will result in label creation failures and authentication errors. Ensure the FedEx account is properly re-registered with MFA.