Answer.

History of the issue: In large projects, requirements are closely interconnected: changing one element affects others. The analyst must ensure that all dependencies are identified and managed to avoid unexpected failures during implementation.

Problem: Hidden links between business functions (for example, between reporting and transaction processing) are often overlooked, leading to bugs, duplication, SLA violations, and maintenance difficulties.

Solution:

• Building a Traceability Matrix between requirements, use cases, modules, and test cases.
• Using Dependency Mapping: visualizing links between requirements through diagrams (e.g., requirement relationship diagrams).
• Regular joint requirement reviews with the team: reviews are particularly critical when requirements change.

Key features:

• The dependency matrix becomes a single point of agreement during changes.
• Links are recorded not only between requirements but also between business goals, architectural blocks, and test cases.
• Using formalism reduces the likelihood of subjective errors.

Tricky questions.

"Is it enough to describe the dependencies between requirements only in the form of text links?"

No, text links are not sufficiently clear and lead to missed connections. It is important to use graphical or tabular formats.

"Can reviews be skipped after the initial identification of dependencies?"

No, whenever requirements change, dependencies need to be reviewed — often new links appear or old ones disappear.

"Does having a dependencies matrix mean that conflicts between requirements are impossible?"

No, the matrix is just a visualization tool; it helps but does not eliminate conflicts, which need to be resolved manually in meetings and agreements.

Typical mistakes and anti-patterns

• Lack of a single point of reference for dependencies (scattered documents).
• Insufficient detail in the connections.
• Ignoring the visualization of dependencies.

Real-life example

Negative case: In a logistics automation project, dependent requirements for route planning and cost calculation were documented separately, leading to conflicts during the implementation of changes.

Pros:

• Time savings during the initial analysis.

Cons:

• Non-obvious bugs, significant time loss for rework.

Positive case: In a similar project, the analyst built a traceability matrix and displayed the links on a special dashboard.

Pros:

• Transparency of the impact of changes, minimizing conflicts.

Cons:

• The necessity to spend additional time on updating the traceability matrix.