Replicate custom fields from MM to CRM standard table

Hi Experts,

I want to replicate 2 fields from MM to CRM. in which one field is a standard field which is available in MARC table and second one is z field available in MARA table.

Here i want to map this standard field to comm_product table standard field, and this z field to comm_product table field created using append structures.

by searching i found that i have to implement PRODUCT_CUSTOMER2 badi.

apart from this are there any SPRO settings i have to do, because there is one standard field which i have to map from MM to CRM.

I need some inputs and suggestions here.

Thank You,

Sai