UoM material replication error, import from ECC to C4C

Hello All,

We are implementing C4C with ERP. In UoM replication we get error replies if ERP sends material conversions which already exists in C4C. Is there a table where we can see which quantity conversions to C4C are allowed and which not? Like, TNE - KGM is allowed, CA - KGM not allowed.

This would be very helpful to decide on the best workaround to this issue.

Thanks in advance,

Petra