Check your linked data fields to the "Brand*" field of the catalogue. Brands can most easily be linked via existing manufacturers (Tab: Global) of the item, or via attributes (Tab: Attributes) of the variants. Therefore, make sure that there is a link to the variant in each case. If you want to link via the manufacturer, select Add data field »´> Manufacturer > and your desired manufacturer.

It should also be noted that the linked OTTO brand should be selected in the dropdown. Manual entry of the brand should not be made.

If your brand does not exist in the OTTO brand field (left), you can have the brand registered with OTTO Market. More details can be found in the Helpdesk at OTTO Market.