Changing Statistical internal order in FB02

Hi,

I understand that posted FI document do not allow to change the CO object, which including cost center, internal order (regardless it is statistical order) etc.

We have run out of assignment field, line item text, ref key 1,2,3. Thus, is there anyway, we can intercept the changing of the statistical internal order (since that is for informational purposes) in FB02? We have no intention to make the statistical internal order change in CO document.

Anybody can shed some light? Thanks.