Hello Pradeep,
Thank you for putting up the screen shot. It explains the situation clearly.
You have assigned JLST, JCST & JSE4 to Country. This means that Tax Classification boxes 1,2 & 3 in Customer master and Material Master will refer to JLST, JCST & JSE4 in the respective order.
Now, in the access sequence for ZVAT & ZCST the Fields would be TAXK1 (TaxClass1-Cust.) & TAXK2 (TaxClass2-Cust.) and TAXM1 & TAXM2 (Tax class. material).
This means that while searching for Condition Records for ZVAT and ZCST systems looks for Tax Classification indicators in Customer and Material for JLST and JCST. Thus even if you have not explicitly maintained any condition records for JLST and JCST, system is referring to Tax Indicators maintained for JLST and JCST to determine ZVAT and ZCST.
I do not know whether I have answered your query to your understanding.
Thanks,
Jignesh Mehta