Duplicate phone numbers are allowed

[Howlong11]

While two contacts can not have same names, they are allowed to have same phone numbers, which is not likely to happen, and should be captured.

[nus-pe-script]

Team's Response

In reality, there are people who share the same company phone number.

We wanted to accommodate for this case, and impose fewer restrictions on the user.

Items for the Tester to Verify

:question: Issue response

Team chose [response.Rejected]

• [x] I disagree

Reason for disagreement: If the contact added are customers, they would be using thier private phone numbers, which will have no duplicates. If they are suppliers, there is no reason to add multiple contacts of people from same company with same phone numbers.

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## :question: Issue type Team chose [`type.FunctionalityBug`] Originally [`type.FeatureFlaw`] - [x] I disagree **Reason for disagreement:** It is a feature flaw that did not consider the most likely situations of using this product.

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## :question: Issue severity Team chose [`severity.Low`] Originally [`severity.Medium`] - [ ] I disagree **Reason for disagreement:** [replace this with your explanation]

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