# Hydration failed because the server rendered HTML didn't match the client. Specifically, attribute 'data-server-value' mismatch.

- **ID:** `react/hydration-mismatch-attribute`
- **Domain:** react
- **Category:** runtime_error
- **Verification:** ai_generated
- **Fix Rate:** 91%

## Root Cause

Server-side rendering produces different attribute values than the client's initial render, often due to dynamic content (e.g., timestamps, random IDs, user-specific data) that differs between server and client environments.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| React 18.2.0 | active | — | — |
| Next.js 13.4.0 | active | — | — |
| Remix 2.0.0 | active | — | — |

## Workarounds

1. **Ensure the attribute value is deterministic between server and client. For dynamic values, use useEffect to set them after hydration, or use a client-only component wrapper.** (95% success)
   ```
   Ensure the attribute value is deterministic between server and client. For dynamic values, use useEffect to set them after hydration, or use a client-only component wrapper.
   ```
2. **Use the 'suppressHydrationWarning' attribute only as a last resort for intentional mismatches (e.g., timestamps), but prefer making the value consistent.** (85% success)
   ```
   Use the 'suppressHydrationWarning' attribute only as a last resort for intentional mismatches (e.g., timestamps), but prefer making the value consistent.
   ```

## Dead Ends

- **** — Suppressing the warning doesn't resolve the mismatch; the client will still re-render the element, potentially causing layout shifts or inconsistent state. (70% fail)
- **** — If the attribute should be dynamic (e.g., based on user preferences), hardcoding removes that functionality. (60% fail)