---
id: data-boundaries.normalize-external-data
status: active
strength: recommended
applicability: { domains: [data-boundaries] }
override: project-overlay-or-explicit-task
enforcement: prompt
aliases: [RULE_BOUNDARY_NORMALIZATION]
---
# Normalize external data

## Instruction

Normalize external data into application-friendly structures at a clear boundary.

## Rationale

Scattered transport quirks couple application components to unstable external representations and multiply conversion defects.