Already tried your first hint. vSphere tells me that the file is not valid. Problem is that i don't know which format i need. My file looks like this:
License Key,Product Name,Quantity,Folder Name,Contract End Date
XXXXX-XXXXX-XXXXX-XXXXX-XXXXX,vCenter Server 8 Essentials,1 Instance,HOME_MIG_2468432,09.24.2024
Do i need comma or semicolon separation? Which Columns do i need?