CRM Product_Mat object syncronization

Hello all,

I need to proceed with Object syncronization. The object is PRODUCT_MAT. However in T-code R3AS when I select the object to load, the system will retrieve CRM as source site, and the field "Destination Site" is in blank. If I try to select a destination site it retrieves a error.

How can I load this object?

Thanks in advance,

Regards