SAP REFX Tax rate calculation based on the tax code validity

[cm_cm]

Dear Folks,

We are created a tax code A4 with 10% VAT and valid period is 01.05.2016 to 31.12.2016, we maintain 15% VAT from 01.01.2017 to 31.12.9999 for the same tax code A4.Tax group is FULL.

We are created a REFX contract and contract start date is 01.05.2016 to 30.04.2017.

Contract Basic Rent condition valid from date is 01.05.2016 and condition amount per month is 10000.

Expected result per month Total amount is 11000 = 10000 + 1000(10%) up to 31.12.2016.

From 01.01.2017 per month rent total amount should be 11500=10000+1500(15%).

But currently system considering 10% for total contract period which is wrong. Actually system should considered the tax percentage based on the valid period as maintained FV11 transaction (Tax Code + validity).

Is there are any additional steps to be followed?. please provide us your valuable inputs.

Note: Same tax code need be used for 10 % & 15% based on the valid period. Creating new tax code is not allowed in same G/L because in G/L we are maintaining the relevant tax code.

Based on the new tax rate change new tax code can't be created for the same service.

Please provide your valuable inputs.

Thanks in advance,

Regards,

Arjun