diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/objects/ObjectsQueries.xml b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/objects/ObjectsQueries.xml
index 2400aff..623237b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/objects/ObjectsQueries.xml
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/objects/ObjectsQueries.xml
@@ -204,6 +204,11 @@
     </compilation-unit>
   </test-case>
   <test-case FilePath="objects" check-warnings="true">
+    <compilation-unit name="open-object-constructor-with-missing-field-name">
+      <output-dir compare="Text">open-object-constructor-with-missing-field-name</output-dir>
+    </compilation-unit>
+  </test-case>
+  <test-case FilePath="objects" check-warnings="true">
     <compilation-unit name="open-closed-fieldname-conflict_issue173">
       <output-dir compare="Text">open-closed-fieldname-conflict_issue173</output-dir>
       <source-location>false</source-location>
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/objects/open-object-constructor-with-missing-field-name/open-object-constructor-with-missing-field-name.1.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/objects/open-object-constructor-with-missing-field-name/open-object-constructor-with-missing-field-name.1.query.sqlpp
new file mode 100644
index 0000000..8a892ef
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/objects/open-object-constructor-with-missing-field-name/open-object-constructor-with-missing-field-name.1.query.sqlpp
@@ -0,0 +1,21 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+FROM [{"fieldName": "status", "fieldValue": "shipped"}, {"fieldValue": "pending"}] AS g
+SELECT VALUE { g.fieldName : g.fieldValue};
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/objects/open-object-constructor-with-missing-field-name/open-object-constructor-with-missing-field-name.2.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/objects/open-object-constructor-with-missing-field-name/open-object-constructor-with-missing-field-name.2.query.sqlpp
new file mode 100644
index 0000000..e132460
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/objects/open-object-constructor-with-missing-field-name/open-object-constructor-with-missing-field-name.2.query.sqlpp
@@ -0,0 +1,44 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+WITH src AS [
+   { "category_name": "Video Card", "status": "Shipped", "order_id": 1, "order_value": 10 },
+   { "category_name": "Video Card", "status": "Shipped", "order_id": 2, "order_value": 20 },
+   { "category_name": "Video Card", "status": "Cancelled", "order_id": 3, "order_value": 30 },
+   { "category_name": "Video Card", "status": "Cancelled", "order_id": 4, "order_value": 40 },
+   { "category_name": "Video Card", "status": "Pending", "order_id": 5, "order_value": 50 },
+   { "category_name": "Video Card", "status": "Pending", "order_id": 6, "order_value": 50 },
+   { "category_name": "Storage", "status": "Shipped", "order_id": 11, "order_value": 110 },
+   { "category_name": "Storage", "status": "Shipped", "order_id": 12, "order_value": 120 },
+   { "category_name": "Storage", "status": "Cancelled", "order_id": 13, "order_value": 130 },
+   { "category_name": "Storage", "status": "Cancelled", "order_id": 14, "order_value": 140 },
+   { "category_name": "Storage", "status": "Pending", "order_id": 15, "order_value": 150 },
+   { "category_name": "Storage", "status": "Pending", "order_id": 16, "order_value": 160 }
+],
+t1 AS (
+   select category_name, status, count(order_id) orders, sum(order_value) sales
+   from src
+   group by category_name, status
+)
+SELECT status, v.*
+FROM t1 group BY status GROUP AS g
+let v = OBJECT_CONCAT((
+    SELECT VALUE { g.t1.category_name || " Orders": g.t1.orders, g.t1.UNKNOWN_FIELD || " Sales": g.t1.sales } FROM g
+))
+ORDER BY status;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/objects/open-object-constructor-with-missing-field-name/open-object-constructor-with-missing-field-name.1.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/objects/open-object-constructor-with-missing-field-name/open-object-constructor-with-missing-field-name.1.adm
new file mode 100644
index 0000000..ca46492
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/objects/open-object-constructor-with-missing-field-name/open-object-constructor-with-missing-field-name.1.adm
@@ -0,0 +1,2 @@
+{ "status": "shipped" }
+{  }
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/objects/open-object-constructor-with-missing-field-name/open-object-constructor-with-missing-field-name.2.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/objects/open-object-constructor-with-missing-field-name/open-object-constructor-with-missing-field-name.2.adm
new file mode 100644
index 0000000..008b550
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/objects/open-object-constructor-with-missing-field-name/open-object-constructor-with-missing-field-name.2.adm
@@ -0,0 +1,3 @@
+{ "Video Card Orders": 2, "Storage Orders": 2, "status": "Cancelled" }
+{ "Video Card Orders": 2, "Storage Orders": 2, "status": "Pending" }
+{ "Video Card Orders": 2, "Storage Orders": 2, "status": "Shipped" }
\ No newline at end of file
diff --git a/asterixdb/asterix-om/src/main/java/org/apache/asterix/builders/RecordBuilder.java b/asterixdb/asterix-om/src/main/java/org/apache/asterix/builders/RecordBuilder.java
index 58e59d6..d08865b 100644
--- a/asterixdb/asterix-om/src/main/java/org/apache/asterix/builders/RecordBuilder.java
+++ b/asterixdb/asterix-om/src/main/java/org/apache/asterix/builders/RecordBuilder.java
@@ -186,9 +186,16 @@
         if (data[offset] == ATypeTag.SERIALIZED_MISSING_TYPE_TAG) {
             return;
         }
-        // ignore adding duplicate fields
         byte[] nameBytes = name.getByteArray();
-        int nameStart = name.getStartOffset() + 1;
+        int nameOffset = name.getStartOffset();
+        // ignore adding fields with NULL/MISSING names
+        if (nameBytes[nameOffset] == ATypeTag.SERIALIZED_MISSING_TYPE_TAG
+                || nameBytes[nameOffset] == ATypeTag.SERIALIZED_NULL_TYPE_TAG) {
+            // TODO(ali): issue a warning
+            return;
+        }
+        // ignore adding duplicate fields
+        int nameStart = nameOffset + 1;
         int nameLength = name.getLength() - 1;
         if (recType != null && recTypeInfo.getFieldIndex(nameBytes, nameStart, nameLength) >= 0) {
             // TODO(ali): issue a warning