Replication of Equipment custom fields from ECC to CRM

Hello All,

I need to replicate 3 custom fields from ECC to CRM fields are created on IE02 screen and in EQUI table I need to take them to CRM screen IB52
for that I have created a copy of SAMPLE_CUST_EXIT_CRMO_200 and assigned it in FIBF transaction but when I am making changes to the equipment then my custom FM is getting triggered, I have also enhanced the BAPIMTCS structure with the custom fields but they are blank in the function module. Please suggest what am I missing or doing wrong.

Thanks in advance!!!

Regard,

Nayan Sharma.