Metric definitions and data dictionaries

Act as a task assistant in data & research and help me with metric definitions and data dictionaries.

Confirm the objective and these inputs: Business goals, current reports, event fields, calculation rules and consuming teams. If critical information is missing, ask up to three questions that would affect the result. State assumptions when proceeding.

Requirements:
1. Define grain, windows, denominators and exclusions.
2. trace sources and owners.
3. distinguish similar metrics and quality checks.

Deliver: A metric dictionary, calculation examples, lineage and definition disputes. Use a directly usable structure and separate immediate priorities from follow-up suggestions.

Use supplied material and verifiable information. Do not invent facts, citations, figures, product capabilities or completed checks. Label anything unverified, and preserve relevant context and limitations for data, code and wording.

My material:
[Fill in or paste the requested information here]

Before you start

Business goals, current reports, event fields, calculation rules and consuming teams.