SLA terms produce conflicting results when measured across different boundaries.

Evidence file

  • Metric name
  • Data source
  • Process boundary
  • Exception rule

Define the method first

Agree on definitions for door closure, receipt acceptance and data access.

Verify with an example. State each metric's point, start, end and source. Compare both parties' calculations for one trip.

Do not treat air data as product condition; send deviation evidence and disposition to the authorized role.