"Missing or invalid shipper phone number" message in SendPro Enterprise

Issue

When shipping a package, the message "Missing or invalid shipper phone number" appears.

Cause

The Ship From address or the Alternative Return Address do not contain a valid phone number.

Resolution

Solution 1: The error occurs during normal processing:
Verify that the Phone Number field on the Ship From tab contains a valid phone number.

If an Alternative Return Address is being used, verify that the Phone Number field on the Alternative Return Address tab contains a valid phone number.

Solution 2: The error occurs after the UPS OAuth migration:

See "Missing or invalid shipper number" error displays after UPS OAuth migration in SendPro Enterprise if the issue occurs immediately after UPS OAuth changes.