Error while creating multiple pricing rule

when creating pricing rules with multiple criteria on the basis of discount percentage error is occurring by saying “Multiple Price Rule exists with same criteria , please resolve conflict by assigning priority.”
It will be grateful if someone help me to solve this issue
i need to apply coupon code for discount percentage 5% ,7% ,10% ,12%, 15% ,20% and 100%.
This error message is coming randomly with pricing rules.

Also while giving different coupon code on items, same amount is deducted
ie, for 5% and 10 % constant price is reducing

Someone Please help me with this issue


Hi, have you found any solution for the same?