mendixlabs

Diagnose Ce0463 — Development skill for Claude Code

Development community

Diagnosing CE0463 "the definition of this widget has changed".

How to install Diagnose Ce0463

Installs to ~/.claude/skills/mendixlabs-mxcli-diagnose-ce0463/SKILL.md

Terminal

mkdir -p ~/.claude/skills/mendixlabs-mxcli-diagnose-ce0463 && curl -fsSL https://raw.githubusercontent.com/mendixlabs/mxcli/HEAD/.claude/skills/diagnose-ce0463.md -o ~/.claude/skills/mendixlabs-mxcli-diagnose-ce0463/SKILL.md

Restart Claude Code, or start a new session, for it to be picked up.

What Diagnose Ce0463 does

Diagnosing CE0463 "the definition of this widget has changed"

CE0463 names the *widget version* but is caused by almost anything in the widget's stored BSON. That mismatch between what the error says and what it means is why this class of bug burns time. Work in this order — each step is cheap and eliminates a whole family of causes.

Related: [`debug-bson.md`](debug-bson.md) for the general BSON diff workflow; [`WIDGET_BSON_VERSION_COMPATIBILITY.md`](../../docs/03-development/WIDGET_BSON_VER

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