Line item lock at particular line item at the time of invoicing

Hi,

We have business requirement where we wish to insert clearing lock for particular main and sub transaction at the time of invoiving.

I have tried exploring FQEVENTS but with no luck.

Closest I came to is with event 0042 (clearing restriction 8) but it will clear aforesaid line item at next invoice.

So any suggestion would be appreciated.

Regards,

Paresh