Unable to acknowledge message in custom error handler

Hello.

I have created a custom error handler to handle application exceptions and do logging or retrying based on the Exception type.
Below is the sample code what m trying to do:

//QueueMessageListener.java
`public void onMessage(Message message) {
try {
TextMessage textMessage = (TextMessage) message;

        Event event = toEvent(textMessage);

        processor.process(event);
    } catch (Exception ex) {
        throw new CustomException(message, ex);
    }

}`

//`
public class CustomErrorHandler implements ErrorHandler {

@Override
public void handleError(Throwable throwable) {
    if(throwable instanceof CustomException) {
        CustomException exception = (CustomException) throwable;
        Message message = exception.getSqsMessage();
        message.acknowledge();
    }

}
}`

//Configuration
DefaultMessageListenerContainer dmlc = new DefaultMessageListenerContainer(); dmlc.setConcurrency("1-5"); dmlc.setConnectionFactory(sqsConnectionFactory); dmlc.setDestinationName(queueProperties.getName()); dmlc.setSessionAcknowledgeMode(Session.CLIENT_ACKNOWLEDGE); dmlc.setMessageListener(messageListener); dmlc.setErrorHandler(customErrorHandler);

Issue here is, when the custom error handler executes handleError it does not acknowledges the message and message stay in the queue forever... I can see below message in logs
WARN com.amazon.sqs.javamessaging.acknowledge.RangedAcknowledger - SQSMessageID: 46a04726-8e09-48ce-947f-95cb2e8ae9a0 with SQSMessageReceiptHandle: 46a04726-8e09-48ce-947f-95cb2e8ae9a0#44b60e0f-2e02-42f1-a5c1-1db9a458b022 does not exist.

m I missing some configuration?

Regards,
Sumit

Start with QueueMessageListener.java and CustomErrorHandler, then inspect the DefaultMessageListenerContainer configuration using CLIENT_ACKNOWLEDGE and reproduce the missing acknowledgement with the logged receipt handle. Done means identifying the relevant acknowledgement behavior or configuration and documenting a confirmed fix or limitation.