Sequence diagrams should have an alternate path

[nus-pe-bot]

Note from the teaching team: This bug was reported during the Part II (Evaluating Documents) stage of the PE. You may reject this bug if it is not related to the quality of documentation.

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An alternate path to check for the validity of the input should be in the diagram. This is because there is a chance that the input value is wrong and the command would stop there.

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_{[original: nus-cs2103-AY2223S1/pe-interim#4475] [original labels: severity.VeryLow type.DocumentationBug]}

[maryjess]

Team's Response

Sequence diagrams model the interactions between various entities in a system, in a specific scenario. And in this case, we are modelling only the success scenario which is delete 1

Duplicate status (if any):

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