Student with same name but different student id cannot be added

[nus-pe-bot]

Executing the Command: add n/Rila i/e0939125 p/383 c/CS2100 generates an error when
add n/Rila i/e0939124 p/383 c/CS2040S exists. Students with same name but different student id are not allowed to be added.

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_{[original: nus-cs2103-AY2223S1/pe-interim#5793] [original labels: type.FunctionalityBug severity.Low]}

[zzthian]

Team's Response

As stated in UG, Students cannot have the same name. Moreover, the student id also has to be different.

Duplicate status (if any):

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