Delta employee - How to book interline travel at

Can a Delta person explain how I book travel on KLM? Everything shows not available on ID90 even though a friend at United is able to book a nonrev reservation on his employee portal. This is my first attempt at international interline travel so I am a bit of a rookie.

thanks for the help!

Hi, welcome! I’m not a DL employee but at many airlines, if you have less than 6 months seniority, you will not be able to travel on an interline ticket until you’ve passed 6 months. I’ll leave it to the DL folks if this doesn’t solve your issue.