Serial Number missing in MIGO

Hello,

I'm having an issue with serial number. In fact, when I do the transaction QA32, the material document is created. But when I check in MIGO, the serial number is missing.

I already checked the Work Scheduling in MM03. The serial number profile is well assigned.

I also checked QMSL procedure. The serial number usage is set to 03 (i.e. obligatory)

Grateful if someone could shed some light on which direction should I continue to investigate.

Thank you