Wrong error message for using string for buy

[ParthGandhiNUS]

Not specified anywhere that buy must be an int, float, or double. No documentation proper documentation found in the UG for what type the "buy" should be.

[nus-pe-bot]

Team's Response

No details provided by team.

The 'Original' Bug

[The team marked this bug as a duplicate of the following bug]

Wrong error message for using float/double for qty

The error shown does not specify the user that float/double is not allowed for quantity. Misleading because the format is correct. Not mentioned in UG that double/float values cant be used for quantity.

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_{[original: nus-cs2113-AY2324S2/pe-interim#385] [original labels: severity.Low type.FunctionalityBug]}

Their Response to the 'Original' Bug

[This is the team's response to the above 'original' bug]

Noted that qty being an integer should be included in the UG so that new users are not confused

Items for the Tester to Verify

:question: Issue duplicate status

Team chose to mark this issue as a duplicate of another issue (as explained in the Team's response above)

• [ ] I disagree

Reason for disagreement: [replace this with your explanation]

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## :question: Issue response Team chose [`response.NotInScope`] - [x] I disagree **Reason for disagreement:** As a user, I would like to know what is the error I am making. I believe as the developer of an application for keeping track of inventory the user should know exactly why and where he/she is going wrong.

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## :question: Issue type Team chose [`type.FunctionalityBug`] Originally [`type.FeatureFlaw`] - [ ] I disagree **Reason for disagreement:** [replace this with your explanation]

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## :question: Issue severity Team chose [`severity.VeryLow`] Originally [`severity.Low`] - [x] I disagree **Reason for disagreement:**  Definitely cannot be considered as an cosmetic issue. Group need to use more appropriate error/exception messages instead of reusing one which does not even fit the context.

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