diff --git a/scalardb/src/scalardb/transfer.clj b/scalardb/src/scalardb/transfer.clj
index 50b63ff..e7ea196 100644
--- a/scalardb/src/scalardb/transfer.clj
+++ b/scalardb/src/scalardb/transfer.clj
@@ -14,9 +14,7 @@
                               Result)
            (com.scalar.db.io IntValue
                              Key)
-           (com.scalar.db.exception.storage ExecutionException)
-           (com.scalar.db.exception.transaction CrudException
-                                                UnknownTransactionStatusException)))
+           (com.scalar.db.exception.transaction UnknownTransactionStatusException)))
 
 (def ^:private ^:const TABLE "transfer")
 (def ^:private ^:const ACCOUNT_ID "account_id")
diff --git a/scalardb/src/scalardb/transfer_append.clj b/scalardb/src/scalardb/transfer_append.clj
index bfa169b..9197376 100644
--- a/scalardb/src/scalardb/transfer_append.clj
+++ b/scalardb/src/scalardb/transfer_append.clj
@@ -13,8 +13,7 @@
                               Scan$Ordering
                               Scan$Ordering$Order
                               Result)
-           (com.scalar.db.exception.transaction CrudException
-                                                UnknownTransactionStatusException)
+           (com.scalar.db.exception.transaction UnknownTransactionStatusException)
            (com.scalar.db.io IntValue
                              Key)))
 
diff --git a/scalardb/test/scalardb/core_test.clj b/scalardb/test/scalardb/core_test.clj
index 5c39604..00d00de 100644
--- a/scalardb/test/scalardb/core_test.clj
+++ b/scalardb/test/scalardb/core_test.clj
@@ -25,7 +25,9 @@
       (condp = column
         "tx_id" (Optional/of (TextValue. column id))
         "tx_created_at" (Optional/of (BigIntValue. column (long 1566376246)))
-        "tx_state" (Optional/of (IntValue. column (Integer/parseInt id)))))))
+        "tx_state" (Optional/of (IntValue. column (Integer/parseInt id)))
+        ;; for the coordinator table
+        "tx_child_ids" (Optional/empty)))))
 
 (def mock-db
   (reify