You will find the following error message there:

0:Object
code:"600022 - UNALLOWED_PRODUCT"
title:"This product is prohibited in the EU and therefore may not be offered on the OTTO marketplace. Please submit a ticket via the Partner Helpdesk on this topic for any possible queries."
Trigger:"cli: artisan otto:item:marketplace-status"**

The product is not allowed to be sold on Otto Market and should therefore be deactivated for Otto Market. For this, you can, for example, remove the market availability OTTO market under Article > Variant > Availability > Markets.