Canonical Schema / Service-Specific Schemas
Kind: tension
Record: tension:canonical-schema-service-specific-schemas
Canonical: Schema
"canonical-schema" (contracts-core layer) is traded against "Service-Specific Schemas" (contracts-core layer) — a principle cannot be scope-separated from a quality, metric, or cost it competes with; resolve by measuring "Service-Specific Schemas" and choosing an explicit operating point.
Listed in Tensions, after Canonical Data Model / Local Model Autonomy and before Canonicalization / Lossless Preservation.