# json.UnmarshalFieldError

- **ID:** `go/json-unmarshalfielderror`
- **Domain:** go
- **Category:** type_error
- **Verification:** official
- **Fix Rate:** 80%

## Root Cause

JSON key does not match struct field. Check field tags and case sensitivity.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| 1.x | active | — | — |