diff --git a/portal-impl/src/com/liferay/portal/service.xml b/portal-impl/src/com/liferay/portal/service.xml
index f1552e6c998342..2fdeef66ea8afb 100644
--- a/portal-impl/src/com/liferay/portal/service.xml
+++ b/portal-impl/src/com/liferay/portal/service.xml
@@ -3431,7 +3431,6 @@
 		<exception>RequiredRole</exception>
 		<exception>RequiredUser</exception>
 		<exception>RequiredUserGroup</exception>
-		<exception>ReservedUserId</exception>
 		<exception>ResourcePrimKey</exception>
 		<exception>RoleAssignment</exception>
 		<exception>RoleName</exception>
diff --git a/portal-service/src/com/liferay/portal/ReservedUserIdException.java b/portal-service/src/com/liferay/portal/ReservedUserIdException.java
index 497c468cc49d55..2fc4fb19d9b9e3 100644
--- a/portal-service/src/com/liferay/portal/ReservedUserIdException.java
+++ b/portal-service/src/com/liferay/portal/ReservedUserIdException.java
@@ -18,7 +18,10 @@
 
 /**
  * @author Brian Wing Shun Chan
+ * @deprecated As of 7.0.0, replaced by {@link
+ *             UserIdException.MustNotBeReserved}
  */
+@Deprecated
 public class ReservedUserIdException extends PortalException {
 
 	public ReservedUserIdException() {
diff --git a/portal-service/src/com/liferay/portal/UserIdException.java b/portal-service/src/com/liferay/portal/UserIdException.java
index 5b1af04b328750..6dffdda1620fc9 100644
--- a/portal-service/src/com/liferay/portal/UserIdException.java
+++ b/portal-service/src/com/liferay/portal/UserIdException.java
@@ -15,6 +15,7 @@
 package com.liferay.portal;
 
 import com.liferay.portal.kernel.exception.PortalException;
+import com.liferay.portal.kernel.util.StringUtil;
 
 /**
  * @author Brian Wing Shun Chan
@@ -61,4 +62,21 @@ public MustNotBeNull() {
 
 	}
 
+	public static class MustNotBeReserved extends UserIdException {
+
+		public MustNotBeReserved(long userId, String[] reservedUserIds) {
+			super(
+				String.format(
+					"User ID %s must not be a reserved one such as: %s", userId,
+					StringUtil.merge(reservedUserIds)));
+
+			this.userId = userId;
+			this.reservedUserIds = reservedUserIds;
+		}
+
+		public final String[] reservedUserIds;
+		public final long userId;
+
+	}
+
 }
\ No newline at end of file
diff --git a/portal-web/docroot/html/portlet/login/create_account.jsp b/portal-web/docroot/html/portlet/login/create_account.jsp
index 7b8b387044cfcb..58bc49b20e6e20 100644
--- a/portal-web/docroot/html/portlet/login/create_account.jsp
+++ b/portal-web/docroot/html/portlet/login/create_account.jsp
@@ -68,7 +68,6 @@ birthdayCalendar.set(Calendar.YEAR, 1970);
 	<liferay-ui:error exception="<%= NoSuchRegionException.class %>" message="please-select-a-region" />
 	<liferay-ui:error exception="<%= PhoneNumberException.class %>" message="please-enter-a-valid-phone-number" />
 	<liferay-ui:error exception="<%= RequiredFieldException.class %>" message="please-fill-out-all-required-fields" />
-	<liferay-ui:error exception="<%= ReservedUserIdException.class %>" message="the-user-id-you-requested-is-reserved" />
 	<liferay-ui:error exception="<%= TermsOfUseException.class %>" message="you-must-agree-to-the-terms-of-use" />
 	<liferay-ui:error exception="<%= UserEmailAddressException.class %>" message="please-enter-a-valid-email-address" />
 	<liferay-ui:error exception="<%= UserEmailAddressException.MustNotBeDuplicate.class %>" message="the-email-address-you-requested-is-already-taken" />
@@ -76,6 +75,7 @@ birthdayCalendar.set(Calendar.YEAR, 1970);
 	<liferay-ui:error exception="<%= UserEmailAddressException.MustNotBeReserved.class %>" message="the-email-address-you-requested-is-reserved" />
 	<liferay-ui:error exception="<%= UserEmailAddressException.MustNotUseCompanyMx.class %>" message="the-email-address-you-requested-is-not-valid-because-its-domain-is-reserved" />
 	<liferay-ui:error exception="<%= UserIdException.class %>" message="please-enter-a-valid-user-id" />
+	<liferay-ui:error exception="<%= UserIdException.MustNotBeReserved.class %>" message="the-user-id-you-requested-is-reserved" />
 
 	<liferay-ui:error exception="<%= UserPasswordException.MustBeLonger.class %>">
 
diff --git a/portal-web/docroot/html/portlet/login/init.jsp b/portal-web/docroot/html/portlet/login/init.jsp
index 050e2b82873913..ae14b40ffc189b 100644
--- a/portal-web/docroot/html/portlet/login/init.jsp
+++ b/portal-web/docroot/html/portlet/login/init.jsp
@@ -35,7 +35,6 @@ page import="com.liferay.portal.PasswordExpiredException" %><%@
 page import="com.liferay.portal.PhoneNumberException" %><%@
 page import="com.liferay.portal.RequiredFieldException" %><%@
 page import="com.liferay.portal.RequiredReminderQueryException" %><%@
-page import="com.liferay.portal.ReservedUserIdException" %><%@
 page import="com.liferay.portal.SendPasswordException" %><%@
 page import="com.liferay.portal.TermsOfUseException" %><%@
 page import="com.liferay.portal.UserActiveException" %><%@
diff --git a/portal-web/docroot/html/portlet/users_admin/init.jsp b/portal-web/docroot/html/portlet/users_admin/init.jsp
index 6fcbe39c28e442..a07ce7fdd52756 100644
--- a/portal-web/docroot/html/portlet/users_admin/init.jsp
+++ b/portal-web/docroot/html/portlet/users_admin/init.jsp
@@ -37,7 +37,6 @@ page import="com.liferay.portal.OrganizationParentException" %><%@
 page import="com.liferay.portal.PhoneNumberException" %><%@
 page import="com.liferay.portal.RequiredOrganizationException" %><%@
 page import="com.liferay.portal.RequiredUserException" %><%@
-page import="com.liferay.portal.ReservedUserIdException" %><%@
 page import="com.liferay.portal.UserEmailAddressException" %><%@
 page import="com.liferay.portal.UserFieldException" %><%@
 page import="com.liferay.portal.UserIdException" %><%@
diff --git a/portal-web/docroot/html/portlet/users_admin/user/details.jsp b/portal-web/docroot/html/portlet/users_admin/user/details.jsp
index 59026cad48b6f6..3124f6d8003e47 100644
--- a/portal-web/docroot/html/portlet/users_admin/user/details.jsp
+++ b/portal-web/docroot/html/portlet/users_admin/user/details.jsp
@@ -187,8 +187,8 @@ else {
 		</div>
 
 		<c:if test="<%= selUser != null %>">
-			<liferay-ui:error exception="<%= ReservedUserIdException.class %>" message="the-user-id-you-requested-is-reserved" />
 			<liferay-ui:error exception="<%= UserIdException.class %>" message="please-enter-a-valid-user-id" />
+			<liferay-ui:error exception="<%= UserIdException.MustNotBeReserved.class %>" message="the-user-id-you-requested-is-reserved" />
 
 			<aui:input name="userId" type="resource" value="<%= String.valueOf(selUser.getUserId()) %>" />
 		</c:if>
diff --git a/readme/7.0/BREAKING_CHANGES.markdown b/readme/7.0/BREAKING_CHANGES.markdown
index e152c07ef58a42..c133eb7c42e7f9 100644
--- a/readme/7.0/BREAKING_CHANGES.markdown
+++ b/readme/7.0/BREAKING_CHANGES.markdown
@@ -942,4 +942,34 @@ necessary information about why the exception was thrown and its context. In
 particular, it contains the problematic email address, and the list of reserved
 email addresses.
 
+---------------------------------------
+
+### Replaced `ReservedUserIdException` with `UserIdException` inner classes
+- **Date:** 2015-Feb-10
+- **JIRA Ticket:** LPS-53487
+
+#### What changed?
+
+`ReservedUserIdException` has been deprecated and replaced with
+`UserIdException.MustNotBeReserved`.
+
+#### Who is affected?
+
+This affects developers who have written code that catches the
+`ReservedUserIdException` while calling the affected methods.
+
+#### How should I update my code?
+
+You should replace catching exception `ReservedUserIdException` with
+catching exception `UserIdException.MustNotBeReserved`.
+
+#### Why was this change made?
+
+A new pattern has been defined for exceptions that provides higher expressivity
+in their names and also more information regarding why the exception was thrown.
+
+The new exception `UserIdException.MustNotBeReserved` has all the necessary 
+information about why the exception was thrown and its context. In particular,
+it contains the problematic user ID and the list of reserved user IDs.
+
 ---------------------------------------
\ No newline at end of file