One indicator has several “correct” values
Teams use different formulas, periods or sources and end up with incompatible numbers.

Good governance answers very ordinary questions. Who sets the rule. Who fixes an error. Which source is authoritative. Who approves a change.
Teams use different formulas, periods or sources and end up with incompatible numbers.
There is no data owner or data steward with the authority and responsibility to take the problem through to resolution.
Definitions, exceptions and calculation logic disappear when the team changes.
You do not judge governance by the number of policies. You see it when there is a conflict. The team knows who decides, which rule applies and where that logic is recorded.
Identify critical domains and the people who can actually make decisions.
Agree terms, indicators, rules and authoritative sources.
Define how an error, rule change, access request or escalation moves through the organisation.
Start with the most critical data and expand the model once it works in practice.