In the Kaufland Seller Portal, you can view whether your product updates were successful. Additionally, you can download the "Update CSV" and check its contents.

Navigate as follows:

https://sellerportal.kaufland.de/
→ Offer Management → Manage Imports → Previous Imports - > Tab: Product Data Imports → now look out for the term "action=catalogProductDataUpdate" in the link here.

You will see the status of the upload on the right and can, if necessary, download the CSV in the browser via the link (copy it).