diff --git a/xml/System.Security.Cryptography.Pkcs/SubjectIdentifier.xml b/xml/System.Security.Cryptography.Pkcs/SubjectIdentifier.xml
index 439fafbf8e4..0b62b0d617e 100644
--- a/xml/System.Security.Cryptography.Pkcs/SubjectIdentifier.xml
+++ b/xml/System.Security.Cryptography.Pkcs/SubjectIdentifier.xml
@@ -52,10 +52,19 @@
         <Parameter Name="certificate" Type="System.Security.Cryptography.X509Certificates.X509Certificate2" Index="0" FrameworkAlternate="dotnet-plat-ext-3.0" />
       </Parameters>
       <Docs>
-        <param name="certificate">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="certificate">The certificate to match with the current subject identifier instance.</param>
+        <summary>Verifies if the specified certificate's subject identifier matches current subject identifier instance.</summary>
+        <returns><see langword="true" /> if the specified certificate's identifier matches the current subject identifier instance; otherwise, <see langword="false" />.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+If the current subject identifier instance is of type <xref:System.Security.Cryptography.Pkcs.SubjectIdentifierType.IssuerAndSerialNumber?displayProperty=nameWithType>, this method compares the current instance's X09 issuer serial number and issuer name with the specified certificate's issuer serial number and issuer name. If the current subject identifier instance is of type <xref:System.Security.Cryptography.Pkcs.SubjectIdentifierType.SubjectKeyIdentifier?displayProperty=nameWithType>, this method compares the current instance's subject key identifier with the specified certificate's subject key identifier.
+
+          ]]></format>
+        </remarks>
+        <exception cref="T:System.Security.Cryptography.CryptographicException">Invalid subject identifier type.</exception>
       </Docs>
     </Member>
     <Member MemberName="Type">
@@ -135,4 +144,4 @@
       </Docs>
     </Member>
   </Members>
-</Type>
\ No newline at end of file
+</Type>