# org.apache.kafka.common.errors.InvalidRequiredAcksException: The required acks value is invalid.

- **ID:** `kafka/invalid-required-acks`
- **Domain:** kafka
- **Category:** config_error
- **Verification:** ai_generated
- **Fix Rate:** 90%

## Root Cause

The producer sent a request with an invalid 'acks' value (e.g., -2 or 3) that is not in the allowed set of -1, 0, or 1.

## Workarounds

1. **Set acks to a valid value in the producer properties: `props.put('acks', 'all')` (equivalent to -1) or `props.put('acks', '1')`. Example fix: change `acks=-2` to `acks=1`.** (90% success)
   ```
   Set acks to a valid value in the producer properties: `props.put('acks', 'all')` (equivalent to -1) or `props.put('acks', '1')`. Example fix: change `acks=-2` to `acks=1`.
   ```

## Dead Ends

- **** — Setting acks to 'all' (string) instead of -1 (integer) in the producer config causes a different error; this error specifically catches invalid integer values. (80% fail)
- **** — Ignoring the error and retrying with the same value will fail repeatedly; the config must be corrected. (100% fail)