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A requirement states: "The system shall send notifications immediately." What is the main issue with this requirement?

medium📝 Analysis Q6 of Q15
LLD - Design — Parking Lot System
A requirement states: "The system shall send notifications immediately." What is the main issue with this requirement?
AIt is too specific and limits design options
BIt is ambiguous and lacks measurable criteria
CIt is a non-functional requirement incorrectly stated
DIt conflicts with security requirements
Step-by-Step Solution
Solution:

  1. Step 1: Analyze the requirement

    "Immediately" is vague and subjective.

  2. Step 2: Identify issue

    Requirement lacks measurable or testable criteria.

  3. Step 3: Correct approach

    Specify exact timing, e.g., "within 5 seconds".

  4. Final Answer:

    It is ambiguous and lacks measurable criteria -> Option B

  5. Quick Check:

    Check if requirement is measurable [OK]
Quick Trick: Avoid vague terms like 'immediately' [OK]
Common Mistakes:
MISTAKES
  • Assuming 'immediately' is precise
  • Confusing functional with non-functional requirements
  • Ignoring need for measurable criteria

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