The article outlines the steps to import Sizes within Sync ‘Administration’. Note that you will need to have permission to Administration to access this function.
FOLLOW STEPS BELOW:
1. From within ‘Navigation’ search for ‘Size’
2. Select ‘Sizes’
3. Click on the Import button.
4. Click Save Template to receive the Size Import Template and name accordingly.
5. Populate Column A with the required sizes and save the template.
6. Click Browse in the Importer Window and find the Size Import Template and open it.
7. Click Validate Data and then Import if no errors.
NB. For a quick tutorial watch below