How to Pick up VAT Condition data

Dear Abaper's,

  I have following VAT Condition Type   

1. JVRD/JVCD

2. JVRN/JVCN

3. JIPC

I am using - RSEG table for Miro Document & year,

Condition type field is KSCHL and Table is BSET.

My selection Where Condition is RSEG-TXGRP = BSET-LFPOS.

Problem is My some data is coming Correctly But some coming Wrong due to above where condition.

So experts Please tell me what should be where condition or another option for capturing vat data .

Waiting for your Valuable reply.

Thanks

Gaurav M