# FLOW_IMBALANCE

> FLOW_IMBALANCE is a lint warning: a Sankey intermediate node receives a different total flow than it emits, leaving part of its height without a matching ribbon.

- **Tier:** lint
- **Severity:** warning
- **Origins:** source

## What triggers it

A node appears as both a link target and source, but the sum of incoming values differs from the sum of outgoing values beyond floating-point tolerance.

## How to fix it

Balance the incoming and outgoing values, or add an explicit remainder link so every unit of flow has a named destination.

## Example

```mermaid
sankey-beta
  Supply,Hub,10
  Hub,Used,7
```

Run `am verify diagram.mmd --json`, inspect this code, and apply the smallest source or typed mutation that clears it. If it persists after two mechanical attempts, return the warning and ask for human review.

Full page: https://agentic-mermaid.dev/warnings/FLOW_IMBALANCE/