diff --git a/src/test/java/com/amazonaws/services/kinesis/clientlibrary/proxies/util/KinesisLocalFileDataCreator.java b/src/test/java/com/amazonaws/services/kinesis/clientlibrary/proxies/util/KinesisLocalFileDataCreator.java
index e5e4419a..93e80d4e 100644
--- a/src/test/java/com/amazonaws/services/kinesis/clientlibrary/proxies/util/KinesisLocalFileDataCreator.java
+++ b/src/test/java/com/amazonaws/services/kinesis/clientlibrary/proxies/util/KinesisLocalFileDataCreator.java
@@ -119,7 +119,9 @@ public class KinesisLocalFileDataCreator {
                         maxSequenceNumber = new BigInteger(endingSequenceNumber);
                     }
                     if (maxSequenceNumber.compareTo(sequenceNumber) != 1) {
-                        throw new IllegalArgumentException("Not enough space in shard");
+                        throw new IllegalArgumentException("Not enough space in shard. maxSequenceNumber: "
+                            + maxSequenceNumber.toString() + ", sequenceNumber: " + sequenceNumber.toString()
+                        + ", sequenceNumberIncrement: " + sequenceNumberIncrement.toString());
                     }
                     String partitionKey =
                             PARTITION_KEY_PREFIX + shard.getShardId() + generateRandomString(PARTITION_KEY_LENGTH);