Need Multple Address with same address type validation in oracle

Summary:

We have business requirement for showing a validation error message if employee is adding new address with same address type. So I have created a autocomplete validation rule and tried to implement the same, error message is working fine but the issue is , error is coming if I am updating the current address with another date in update mode which we don't , we just need validations when someone click on add button and select same address type.
I have also raised SR for the Same and they suggested to raise it on CCC - SR 3-36303896471 

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