Function module to create the point account type

Hi experts,

I have a requirement to create the point account type for a membership. For instance, for a membership which has one point type EURO, I need to add one more with US_DO. This has to be done by a program. I am using the FM CRM_LOY_PT_ACCT_CREATE by passing below values but the point account is not created.

process_type = l_v_process_type. "Process type

pt_type = l_v_point_type. "Point type, US_DO here in my case

ref_guid = l_v_pa_set_guid. "PA_SET_GUID field of LOY_MSH_MEMS table after passing the Membership id

APPLICATION = 'PTAC'.

Could anyone please help with any other function module or is there any other fields to be passed to this FM itself?. I see that the return value ev_success is X after the FM call though, the object_id is empty.

Thanks,

Faisal