Problem
I have tried printing a UPS shipping label and am seeing an error returned:
Missing or invalid shipper number.
Solution
The following error is returned due to certain values being incorrectly entered in the UPS integration. Usually, these can be either Shipper Number or Shipper Address details.
To resolve it, please follow these steps:
1. Go to the UPS website and double-check that the Account Number and Shipper Address are the same as in Linnworks. If you notice a mismatch in details, you may need to delete the existing UPS integration and add it from scratch into Shipping > Integrations. The second registration attempt should re-send details to UPS and attempt to create a connection once more.
When adding a new UPS integration, use a different Account Name (which will be visible under Account ID in Shipping > Integrations). This is obligatory, Account ID is being checked during the integration process stage and may trigger the same error again.
2. If an error message is returned still, please contact Technical Support and provide screenshots with address data from the following sections on the UPS website:
- Accounts and Payment > Actions > Edit > Location Address
- Addresses > My Addresses
We will attempt to create an integration on your database from scratch.
Additional information
Add UPS and Invoice data