Hi Augustin -- have you tried using the Lookup Record function? Send me your tables and I'm happy to help with specific ways to match them, but if there's a common field between the two tables (ex. company name or company domain), the Lookup Record function can help you match. Here's a link for it: https://www.loom.com/share/72f4e67e20424ba7a784ca9a5056f1a9?sid=0194f8b1-d773-4aaf-a40b-dbb34c279656