Commodity Code Transfer to ECC Error

Hi Experts,

While transferring the commodity code from GTS to ECC, the job failed with error "No SAP unit of measure could be determined for supplementary unit" (program /SAPSLL/STAWN_RETRANSFER).

This is a very well known issue and have been discussed in the forum before. The problem lies in some material which has an alternate unit of measure which does not exist in ECC.

But, How do I know which material it is? The batch job log does not say that.

Thanks in advance.