When requests to Step Function fail, Workflow Service performs exponential backoff retries to notify Step Function service.

RetryPolicy retryPolicy = new RetryPolicy.RetryPolicyBuilder().withDelayBackoff(Duration.ofSeconds(2), Duration.ofSeconds(30))
        .withJitter(0.5)
        .withMaxRetryAttempts(20)
        .withMaxAttempts(20)
        .withInterruptiblePredicate(new Predicate<Throwable>() {
            @Override
            public boolean test(Throwable throwable) {
                return throwable instanceof InterruptedException;
            }
        })
        .build();