diff --git a/accessibility-checker-engine/src/v2/aria/ARIADefinitions.ts b/accessibility-checker-engine/src/v2/aria/ARIADefinitions.ts
index 6d622f8c9..675febf06 100644
--- a/accessibility-checker-engine/src/v2/aria/ARIADefinitions.ts
+++ b/accessibility-checker-engine/src/v2/aria/ARIADefinitions.ts
@@ -1754,7 +1754,7 @@ export class ARIADefinitions {
         },
         "aside": {
             implicitRole: ["complementary"],
-            validRoles: ["doc-dedication", "doc-example", "doc-footnote", "doc-pullquote", "doc-tip", "feed", "none", "note", "presentation", "region", "search"],
+            validRoles: ["doc-dedication", "doc-example", "doc-footnote", "doc-glossary", "doc-pullquote", "doc-tip", "feed", "none", "note", "presentation", "region", "search"],
             globalAriaAttributesValid: true
         },
         "audio": {
@@ -2120,10 +2120,10 @@ export class ARIADefinitions {
             globalAriaAttributesValid: true
         },
         "s": {
-            implicitRole: null,
+            implicitRole: ["deletion"],
             validRoles: ["any"],
             globalAriaAttributesValid: true,
-            prohibitedAriaAttributesWhenNoImplicitRole: ["aria-label", "aria-labelledby"]
+            otherDisallowedAriaAttributes: ["aria-label", "aria-labelledby"]
         },
         "samp": {
             implicitRole: ["generic"],
diff --git a/accessibility-checker-engine/test/v2/checker/accessibility/rules/aria_attribute_valid_ruleunit/deletion_attribute.html b/accessibility-checker-engine/test/v2/checker/accessibility/rules/aria_attribute_valid_ruleunit/deletion_attribute.html
new file mode 100755
index 000000000..25393ecb0
--- /dev/null
+++ b/accessibility-checker-engine/test/v2/checker/accessibility/rules/aria_attribute_valid_ruleunit/deletion_attribute.html
@@ -0,0 +1,80 @@
+<!DOCTYPE html>
+<!--
+   /******************************************************************************
+     Copyright:: 2020- IBM, Inc
+
+    Licensed 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.
+  *****************************************************************************/
+-->
+
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
+<title>element role deletion</title>
+</head>
+<body>
+	
+  <p><s aria-label="delet">There will be 15 tickets available at the box office tonight.</s></p>
+  <p><s role='alert' aria-label="delet">Tickets are sold out quickly, buy soon.</s></p>
+
+  <p>Please Check Later!</p>
+  
+	<script>
+		UnitTest = {
+			ruleIds: ["aria_attribute_valid"],
+			results: [
+			{
+            "ruleId": "aria_attribute_valid",
+            "value": [
+              "INFORMATION",
+              "FAIL"
+            ],
+            "path": {
+              "dom": "/html[1]/body[1]/p[1]/s[1]",
+              "aria": "/document[1]/paragraph[1]/deletion[1]"
+            },
+            "reasonId": "Fail_invalid_implicit_role_attr",
+            "message": "The ARIA attributes \"aria-label\" are not valid for the element <s> with implicit ARIA role \"deletion\"",
+            "messageArgs": [
+              "aria-label",
+              "s",
+              "deletion"
+            ],
+            "apiArgs": [],
+            "category": "Accessibility"
+          },
+          {
+            "ruleId": "aria_attribute_valid",
+            "value": [
+              "INFORMATION",
+              "FAIL"
+            ],
+            "path": {
+              "dom": "/html[1]/body[1]/p[2]/s[1]",
+              "aria": "/document[1]/paragraph[2]/alert[1]"
+            },
+            "reasonId": "Fail_invalid_role_attr",
+            "message": "The ARIA attributes \"aria-label\" are not valid for the element <s> with ARIA role \"alert\"",
+            "messageArgs": [
+              "aria-label",
+              "s",
+              "alert"
+            ],
+            "apiArgs": [],
+            "category": "Accessibility"
+          }
+		  ]
+		}
+	  </script>
+</body>
+</html>
diff --git a/accessibility-checker-engine/test/v2/checker/accessibility/rules/aria_role_allowed_ruleunit/aside_role.html b/accessibility-checker-engine/test/v2/checker/accessibility/rules/aria_role_allowed_ruleunit/aside_role.html
new file mode 100644
index 000000000..6af8cc15e
--- /dev/null
+++ b/accessibility-checker-engine/test/v2/checker/accessibility/rules/aria_role_allowed_ruleunit/aside_role.html
@@ -0,0 +1,62 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<!--
+   /******************************************************************************
+     Copyright:: 2020- IBM, Inc
+
+    Licensed 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.
+  *****************************************************************************/
+-->
+
+<html lang="en" id="id-32">
+
+<head id="id-29">
+    <title id="id-36">Test aside aria role allowance</title>
+    <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
+</head>
+
+<body id="id-9" aria-atomic="true">
+    <aside id="id-6" role='doc-glossary' aria-expanded="true">
+        <h4>Epcot Center</h4>
+        <p>The Epcot Center is a theme park in Disney World, Florida.</p>
+    </aside>
+    
+    <script type="text/javascript">
+        UnitTest = {
+            ruleIds: ["aria_role_valid", "aria-attribute_valid"],
+            results: [
+            {
+            "ruleId": "aria_role_valid",
+            "value": [
+              "INFORMATION",
+              "PASS"
+            ],
+            "path": {
+              "dom": "/html[1]/body[1]/aside[1]",
+              "aria": "/document[1]/generic[1]/doc-glossary[1]"
+            },
+            "reasonId": "Pass_0",
+            "message": "Rule Passed",
+            "messageArgs": [
+              "doc-glossary",
+              "aside"
+            ],
+            "apiArgs": [],
+            "category": "Accessibility"
+          }
+            ]
+        }
+    </script>
+
+</body>
+
+</html>
\ No newline at end of file
diff --git a/accessibility-checker-engine/test/v2/checker/accessibility/rules/aria_role_redundant_ruleunit/deletion_role.html b/accessibility-checker-engine/test/v2/checker/accessibility/rules/aria_role_redundant_ruleunit/deletion_role.html
new file mode 100755
index 000000000..23155e943
--- /dev/null
+++ b/accessibility-checker-engine/test/v2/checker/accessibility/rules/aria_role_redundant_ruleunit/deletion_role.html
@@ -0,0 +1,58 @@
+<!DOCTYPE html>
+<!--
+   /******************************************************************************
+     Copyright:: 2020- IBM, Inc
+
+    Licensed 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.
+  *****************************************************************************/
+-->
+
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
+<title>element role deletion</title>
+</head>
+<body>
+	
+  <p><s role="deletion">There will be 15 tickets available at the box office tonight.</s></p>
+
+  <p>Please Check Later!</p>
+  
+	<script>
+		UnitTest = {
+			ruleIds: ["aria_role_redundant"],
+			results: [
+			{
+            "ruleId": "aria_role_redundant",
+            "value": [
+              "INFORMATION",
+              "FAIL"
+            ],
+            "path": {
+              "dom": "/html[1]/body[1]/p[1]/s[1]",
+              "aria": "/document[1]/paragraph[1]/deletion[1]"
+            },
+            "reasonId": "fail_redundant",
+            "message": "The explicitly-assigned ARIA role \"deletion\" is redundant with the implicit role of the element <s>",
+            "messageArgs": [
+              "deletion",
+              "s"
+            ],
+            "apiArgs": [],
+            "category": "Accessibility"
+          }
+		  ]
+		}
+	  </script>
+</body>
+</html>
