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Kafka Error `TRANSACTIONAL_ID_NOT_FOUND`

Error code 105 · Non-retriable Transactions

The transactionalId could not be found.

Common Causes

A transactional producer's transaction log entry expired and was deleted because the producer was idle longer than transactional.id.expiration.ms (default 7 days)
EndTransaction or AddOffsetsToTxn request was sent for a transactional.id that never completed InitProducerId on this cluster
Producer restarted with a new transactional.id that doesn't match what the broker has in its transaction log

Solutions

Call initTransactions() again to re-register the transactional ID and get a new producer epoch — the previous transaction state has been expired and cleaned up
Increase transactional.id.expiration.ms if producers are legitimately idle for extended periods (batch jobs, infrequent producers)
Ensure producers call initTransactions() before any transactional operation, especially after a restart or long idle period

Diagnostic Commands

# Look for transaction state for the ID in broker logs
grep '<txn-id>\|TRANSACTIONAL_ID_NOT_FOUND\|transactional.id.expiration' /var/log/kafka/server.log | tail -30

# Check broker transaction configuration
kafka-configs.sh --bootstrap-server localhost:9092 --entity-type brokers --entity-default --describe | grep transactional.id.expiration

Related APIs

This error can be returned by: AddOffsetsToTxn · AddPartitionsToTxn · EndTxn · InitProducerId

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