link between OB40 and tax procedure.

Hi Experts,

In OB40 GL code is maintained for different transaction like NAV,MWS etc.Could not get how it is link with OBCN & tax procedure.In tax procedure we maintain different condition type.For example in tax procedure for condition type MWZI account key is NVV but in OB40 could not see this transaction key NVV.

Thanks & Regards

Atharva G.