I want to create a transaction notification in special price for BP:
Suppose for a Vendor i have a item "X" with price 500 valid from 01.01.2020 to 27.11.2020.
but on 28.11.2020 due to some reasons the price is 600.So,the price increase is 20%.
But price increase upto 5% is only allowed.
So,whenever new price is entered into special price,if the price increase percentage is upto 5% then update is allowed otherwise system throws a message as "Price Increase more than 5% is not allowed".
Kindly guide how this can be achieved.