Need a quant specific attribute

Question

I am looking for a way to maintain country of origin at the quant leve.  Since we dual source many materials, the MM setting only allows one COO.  We are using WMS so I need to be able to track that at the bin level x10 of material 123 is COO = US and x 5 od material 123 is COO CN.  I would also prefer if this attribute would prevent mixing storage where "addition to stock" is used in the put-away strategy.
Batch numbers have been suggested, but we use them for true SLED relevant parts so I do not want to have to use some elaborate naming convention of COO+SLED info = batch number.
It needs to be something that can be addded during GR and follows the quant through WM activites.
Thanks in advance.
dw

Answer 1

I know the COO is not at the quant level, I am looking for an attribute field that follows the quant (e.g. 2 quants for same material can show different attribute) that we could use (mis-use) to represent the COO,  We are 3 years into SLED /batch managment and cannot revert that decision.
We do nooed to track multiple COO per material.  THis would all be resulting in soem enhancment to pass this quant level attribute to GTS during CI creation.
Something like using storage units for the various COo but  maybe not that complex...
dw