order won't deliver

been a while since i've been on this forum, a good 3-4 months, but it's nice to be back amongst friends 😊

so, i create a sales order and when i goto deliver it, it won't let me me. gives me this err

Only 0 EA of material 850194001 available

when i go into mmbe it shows more than enough unrestricted stock.

anyone know what i might be doing wrong here? thanks!