How to link manufacturer serial number with Internal serial number

Hi

I just want suggestion on my below requirement.

I have supplier serial number (Manufacturing serial number). We also have internal serial number.Normally we create internal serial number automatically at the time of MIGO. We have not facility to put external serial number in MIGO and that can be link with Internal serial number.

We normally to put external serial number in IQ02 manually in the field of SERGE.

How i Can activate supplier serial number in migo  and link with material document.

Regards

Sandeep