Tax amount difference in Invoice verification (MIRO) and PO

Hi Experts,

I have created a PO for amount of 9435 INR and tax code V1(12.5%) the Net price+Tax= 10614.38 INR it is calculating correctly.

GR is done for same quantity.

While doing MIRO the amount is coming as 9435, but tax calculation is 1848.21(19.38%) and while simulating Invoice tax amount is showing as 1253.69 (13.29%). what is the reason for picking wrong tax in MIRO? from where it is picking this tax?

i have given same(V1) tax code in PO and Invoice.

i check the condition type (JVRD) it is 12.5% in Tcode- FV13.

Payment term is also correct.

Provide the possible reasons for calculating wrong tax? How to over come this problem?