# ORT003: node-type-inconsistent

**Code:** `ORT003`

**Name:** `node-type-inconsistent`

**Severity:** error

**Category:** spec

**Target:** node

**Fixable:** No

## Message

Type constraint mismatch for operator inputs/outputs.

## Suggestion

Ensure all inputs/outputs bound to the same type constraint have matching types.

## Details

ONNX Runtime expects inputs/outputs sharing a type constraint to have the same type.