Base type 362 : Calculating tax twice on sub total 4 conditions

We are on SAP HANA 1610.

This is related to pricing procedure:

In Purchase Pricing procedure I am using condition FRB1 with sub-total as 4.

Now below is the m/06 status for FRB1.

In PO User is maintaining PBXX as 1000 and FRB1 as 100.

Under Invoice tab in PO tax is calculated on 1100 INR. (Which is correct)

Tax is calculated on 1100 INR.

After GR, when we try to book MIRO with “Goods + Planned delivery cost”, we get two lines,

One for Price for 1000, and one for freight 100. But tax is calculated on 1000+100+100.

So freight is considered twice for calculating tax in MIRO screen.

In Tax procedure we have used base type as 362.

Is there anything that I am missing here??

Is my understanding of base type 362 not correct??

Regards,

Sandeep.