creating service confirmations with LSMW by IDOC ?

Hi,

I am new to LSMW to migrate Service confirmations, i am using idoc CRMXIF_ORDER_SAVE_M,

here i am passing the input files to the structures of this idoc,

i have 6 files( Header, actions, appointments, BP, notes, ext_ref )

I am facing mapping issue here

is there any mandatory structures need to be filled while mapping the fields from input files to these existing stuructures(segments) in the idoc ?

or only with Header info also enough to process the service confirmation creation.... i am new to this Service module.

Regards,

N_Reddy