# ONNX006: duplicate-value-name

**Code:** `ONNX006`

**Name:** `duplicate-value-name`

**Severity:** error

**Category:** spec

**Target:** graph

**Fixable:** No

## Message

Multiple values share the same name within a graph.

## Suggestion

Rename values to ensure uniqueness within the graph.

## Details

All value names within a graph must be unique to maintain SSA form
and ensure unambiguous value references.