Partner Determination BADI

Hi,

Can somebody tel me the steps for using COM_PARTNER_BADI for determining custom determination of Partner Function.

We are trying to utilize a custom Access Sequence Z001 to fetch a partner. We implemented COM_PARTNER_BADI and put a breakpoint. But, the BADI was never triggered. We might have missed some step.

Kindly guide us on right method to implement the COM_PARTNER_BADI.

Regards,

Vivek