# ONNX101: duplicate-graph-input

**Code:** `ONNX101`

**Name:** `duplicate-graph-input`

**Severity:** error

**Category:** ir

**Target:** graph

**Fixable:** No

## Message

Duplicate Value object in graph inputs.

## Suggestion

Remove the duplicate Value references from graph inputs.

## Details

Each Value object in a graph's inputs must appear only once.
In onnx_ir, this checks object identity (not just name equality).