UPS shipping fails with an error like "Invalid authentication information.

Problem:
UPS shipping fails with an error like "Invalid authentication information.

Cause:
This typically indicates that the UPS account credentials (username, password, or access key/token) used for authentication are incorrect or have not been properly configured.

Solution:

1. Verify UPS Account Details:

   • Confirm the UPS account number is correct.

   • Obtain the correct username and password associated with the UPS account.

2. Generate Authentication Tokens:

   • Use the UPS developer portal to generate a new Access Token if required (for APIs using OAuth).

   • For systems using legacy credentials, ensure the Access Key is correctly configured.

3. Update Configuration:

   • In ShipConsole update the carrier configuration with the correct credentials and token.

   • Save and test the configuration.

4. Test Shipping:

   • Retry the shipment after updating the credentials to confirm that the issue is resolved