diff --git a/utils/yangutils/plugin/src/main/java/org/onosproject/yangutils/parser/impl/TreeWalkListener.java b/utils/yangutils/plugin/src/main/java/org/onosproject/yangutils/parser/impl/TreeWalkListener.java
index 8f08842..67c2e36 100644
--- a/utils/yangutils/plugin/src/main/java/org/onosproject/yangutils/parser/impl/TreeWalkListener.java
+++ b/utils/yangutils/plugin/src/main/java/org/onosproject/yangutils/parser/impl/TreeWalkListener.java
@@ -1376,6 +1376,99 @@
     }
 
     @Override
+    public void enterCompilerAnnotationStatement(GeneratedYangParser.CompilerAnnotationStatementContext ctx) {
+        // TODO: implement the method.
+    }
+
+    @Override
+    public void exitCompilerAnnotationStatement(GeneratedYangParser.CompilerAnnotationStatementContext ctx) {
+        // TODO: implement the method.
+    }
+
+    @Override
+    public void enterAnnotationStatement(GeneratedYangParser.AnnotationStatementContext ctx) {
+        // TODO: implement the method.
+    }
+
+    @Override
+    public void exitAnnotationStatement(GeneratedYangParser.AnnotationStatementContext ctx) {
+        // TODO: implement the method.
+    }
+
+    @Override
+    public void enterAnnotationType(GeneratedYangParser.AnnotationTypeContext ctx) {
+        // TODO: implement the method.
+    }
+
+    @Override
+    public void exitAnnotationType(GeneratedYangParser.AnnotationTypeContext ctx) {
+        // TODO: implement the method.
+    }
+
+    @Override
+    public void enterAnnotationParameterSpecification(GeneratedYangParser.AnnotationParameterSpecificationContext
+                                                              ctx) {
+        // TODO: implement the method.
+    }
+
+    @Override
+    public void exitAnnotationParameterSpecification(GeneratedYangParser.AnnotationParameterSpecificationContext ctx) {
+        // TODO: implement the method.
+    }
+
+    @Override
+    public void enterAnnotationParameterSpecificationArg(GeneratedYangParser.AnnotationParameterSpecificationArgContext
+                                                                 ctx) {
+        // TODO: implement the method.
+    }
+
+    @Override
+    public void exitAnnotationParameterSpecificationArg(GeneratedYangParser.AnnotationParameterSpecificationArgContext
+                                                                ctx) {
+        // TODO: implement the method.
+    }
+
+    @Override
+    public void enterAnnotationParaInstance(GeneratedYangParser.AnnotationParaInstanceContext ctx) {
+        // TODO: implement the method.
+    }
+
+    @Override
+    public void exitAnnotationParaInstance(GeneratedYangParser.AnnotationParaInstanceContext ctx) {
+        // TODO: implement the method.
+    }
+
+    @Override
+    public void enterAnnotationParaTypeIdentifier(GeneratedYangParser.AnnotationParaTypeIdentifierContext ctx) {
+        // TODO: implement the method.
+    }
+
+    @Override
+    public void exitAnnotationParaTypeIdentifier(GeneratedYangParser.AnnotationParaTypeIdentifierContext ctx) {
+        // TODO: implement the method.
+    }
+
+    @Override
+    public void enterAnnotationParaTypeValue(GeneratedYangParser.AnnotationParaTypeValueContext ctx) {
+        // TODO: implement the method.
+    }
+
+    @Override
+    public void exitAnnotationParaTypeValue(GeneratedYangParser.AnnotationParaTypeValueContext ctx) {
+        // TODO: implement the method.
+    }
+
+    @Override
+    public void enterAnnotationIdentifier(GeneratedYangParser.AnnotationIdentifierContext ctx) {
+        // TODO: implement the method.
+    }
+
+    @Override
+    public void exitAnnotationIdentifier(GeneratedYangParser.AnnotationIdentifierContext ctx) {
+        // TODO: implement the method.
+    }
+
+    @Override
     public void enterVersion(GeneratedYangParser.VersionContext ctx) {
         // do nothing.
     }
diff --git a/utils/yangutils/plugin/src/main/java/org/onosproject/yangutils/parser/impl/listeners/TypeListener.java b/utils/yangutils/plugin/src/main/java/org/onosproject/yangutils/parser/impl/listeners/TypeListener.java
index 9fab09c..4043a8e 100644
--- a/utils/yangutils/plugin/src/main/java/org/onosproject/yangutils/parser/impl/listeners/TypeListener.java
+++ b/utils/yangutils/plugin/src/main/java/org/onosproject/yangutils/parser/impl/listeners/TypeListener.java
@@ -16,7 +16,6 @@
 
 package org.onosproject.yangutils.parser.impl.listeners;
 
-import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangDataTypes;
 import org.onosproject.yangutils.datamodel.YangDerivedInfo;
 import org.onosproject.yangutils.datamodel.YangLeaf;
 import org.onosproject.yangutils.datamodel.YangLeafList;
@@ -27,6 +26,7 @@
 import org.onosproject.yangutils.datamodel.YangUnion;
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangDataTypes;
 import org.onosproject.yangutils.linker.impl.YangResolutionInfoImpl;
 import org.onosproject.yangutils.parser.antlrgencode.GeneratedYangParser;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
@@ -94,6 +94,8 @@
         // Obtain the YANG data type.
         YangDataTypes yangDataTypes = YangDataTypes.getType(ctx.string().getText());
 
+        validateTypeSubStatementCardinality(ctx, yangDataTypes);
+
         // Create YANG type object and fill the values.
         YangType<?> type = getYangType(JAVA_GENERATION);
         type.setNodeIdentifier(nodeIdentifier);
@@ -265,4 +267,37 @@
                     TYPE_DATA, ctx.string().getText(), ENTRY, e.getMessage()));
         }
     }
+
+    /**
+     * Validates type body statements cardinality.
+     *
+     * @param ctx          context object of the grammar rule
+     * @param yangDataType yang data type
+     */
+    private static void validateTypeSubStatementCardinality(GeneratedYangParser.TypeStatementContext ctx,
+                                                            YangDataTypes yangDataType) {
+        if (ctx.typeBodyStatements() == null || ctx.typeBodyStatements().isEmpty()) {
+            ParserException parserException;
+            switch (yangDataType) {
+                case UNION:
+                    parserException = new ParserException("YANG file error : a type union" +
+                            " must have atleast one type statement.");
+                    break;
+                case ENUMERATION:
+                    parserException = new ParserException("YANG file error : a type enumeration" +
+                            " must have atleast one enum statement.");
+                    break;
+                case BITS:
+                    parserException = new ParserException("YANG file error : a type bits" +
+                            " must have atleast one bit statement.");
+                    break;
+                // TODO : decimal64, identity ref, leafref
+                default:
+                    return;
+            }
+            parserException.setLine(ctx.getStart().getLine());
+            parserException.setCharPosition(ctx.getStart().getCharPositionInLine());
+            throw parserException;
+        }
+    }
 }