Error message:
Error code: 60, alias, description: L'alias est obligatoire pour les créations de produit.
Meaning:
This error means that the product is not yet created on Rakuten or is in error in the product report.
How to fix:
Check the latest product report in Lengow.
If the product does not appear in the report, resubmit the feed.
If the issue persists, contact your Rakuten Account Manager for support.