Hi Abirami,
There are 3 ways to address this issue....
1. Made Qty and Value field as grey mode. So that no body can change the Qty. and Price in MIRO.or use Variant.
2. Maintain Tolerance limit for LIV and make Upper limit as 0%. So that a single Rupees high value will block the invoice for payment and it will be unblocked in MRBR before payment.
3. Do some enhancements....
Thanks and Regards
Arun Kumar Sahoo