# ONNX036: graph-output-missing-type

**Code:** `ONNX036`

**Name:** `graph-output-missing-type`

**Severity:** error

**Category:** spec

**Target:** graph

**Fixable:** No

## Message

Graph output is missing type information.

## Suggestion

Run shape inference on the model, e.g. `onnx.shape_inference.infer_shapes(model)`.

## Details

Per the ONNX specification, graph outputs must have type information.
Runtimes use these types to validate output shapes. Running shape
inference can often resolve this automatically.