Mongoose ValidationError 🟩 Node.js

ValidationError: User validation failed: email: Path `email` is required.

A document failed Mongoose schema validation before saving.

Seen on: Node.js

Meaning

Each failing path is listed with its reason (required, enum, min/max, custom validators).

Common causes

  • Missing required fields
  • Enum/format mismatch
  • Request body not parsed (req.body empty)

⚡ Quick fix

  1. Return per-field errors to the client (err.errors)
  2. Ensure the body is parsed and mapped
  3. Align the schema with real data

Detailed fix by platform

Node.js

  1. if (err.name === 'ValidationError') return res.status(422).json(Object.fromEntries(Object.entries(err.errors).map(([k, v]) => [k, v.message])));

How to diagnose

  1. Paths — Which fields?
  2. Input — What was submitted?

🧠 Still stuck? Analyze your error

Paste the full message, response headers or stack trace — we'll detect the platform and point to the most likely cause.