<?xml version="1.0" encoding="UTF-8" ?>
<?xml-stylesheet type="text/xsl" href="https://community.appian.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/"><channel><title>KB-2185 CDT shows no fields and message "Simple Types cannot be edited"</title><link>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited</link><description /><dc:language>en-US</dc:language><generator>Telligent Community 12</generator><item><title>KB-2185 CDT shows no fields and message "Simple Types cannot be edited"</title><link>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited</link><pubDate>Thu, 03 Jun 2021 22:05:51 GMT</pubDate><guid isPermaLink="false">d3a83456-d57b-489c-a84c-4e8267bb592a:9da37afe-6886-45be-8183-c3d147e443db</guid><dc:creator>Nicholas Van Dyke</dc:creator><comments>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited#comments</comments><description>Current Revision posted to Appian Knowledge Base by Nicholas Van Dyke on 6/3/2021 10:05:51 PM&lt;br /&gt;
&lt;h2&gt;&lt;span&gt;Symptoms&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;After modifying a CDT, the CDT fields are no longer present and the following message is observed when the object is opened in Designer: &lt;code&gt;&amp;quot;Simple Types cannot be edited&amp;quot;&lt;/code&gt;. This can also be seen on a parent or child of the CDT that was modified.&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;img alt=" " border="0" src="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-11/SimpleTypes.png" /&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Cause&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;This issue has been hotfixed via &lt;strong&gt;AN-182130&lt;/strong&gt;&amp;nbsp;in Appian 20.3.830.0, 20.4.795.0, and 21.1.495.0.&lt;/span&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Workaround&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;To workaround the issue, perform &lt;strong&gt;one&lt;/strong&gt; of the following steps:&lt;/span&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;Export the CDT from another environment, and import into the affected environment.&lt;/li&gt;
&lt;li&gt;Delete and re-create the CDT.&lt;/li&gt;
&lt;/ul&gt;
&lt;h2&gt;&lt;span&gt;Affected Versions&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;This article applies to Appian 20.3, 20.4, and 21.1.&lt;/p&gt;
&lt;p&gt;&lt;span&gt;Last Reviewed: June 2021&lt;/span&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: CDTs, known issues, application design, open issues&lt;/div&gt;
</description></item><item><title>KB-2185 CDT shows no fields and message "Simple Types cannot be edited"</title><link>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited/revision/11</link><pubDate>Thu, 03 Jun 2021 21:54:07 GMT</pubDate><guid isPermaLink="false">d3a83456-d57b-489c-a84c-4e8267bb592a:9da37afe-6886-45be-8183-c3d147e443db</guid><dc:creator>Nicholas Van Dyke</dc:creator><comments>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited#comments</comments><description>Revision 11 posted to Appian Knowledge Base by Nicholas Van Dyke on 6/3/2021 9:54:07 PM&lt;br /&gt;
&lt;h2&gt;&lt;span&gt;Symptoms&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;After modifying a CDT, the CDT fields are no longer present and the following message is observed when the object is opened in Designer: &lt;code&gt;&amp;quot;Simple Types cannot be edited&amp;quot;&lt;/code&gt;. This can also be seen on a parent or child of the CDT that was modified.&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;img alt=" " border="0" src="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-11/SimpleTypes.png" /&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Cause&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;This issue has been hotfixed via &lt;strong&gt;AN-182130&lt;/strong&gt;&amp;nbsp;in Appian 20.3.830.0, 20.4.795.0, and 21.1.495.0.&lt;/span&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Workaround&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;To workaround the issue, perform &lt;strong&gt;one&lt;/strong&gt; of the following steps:&lt;/span&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;Export the CDT from another environment, and import into the affected environment.&lt;/li&gt;
&lt;li&gt;Delete and re-create the CDT.&lt;/li&gt;
&lt;/ul&gt;
&lt;h2&gt;&lt;span&gt;Affected Versions&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;This article applies to&amp;nbsp;Appian version 20.3 and later.&lt;/p&gt;
&lt;p&gt;&lt;span&gt;Last Reviewed: June 2021&lt;/span&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: CDTs, known issues, application design, open issues&lt;/div&gt;
</description></item><item><title>KB-2185 CDT shows no fields and message "Simple Types cannot be edited"</title><link>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited/revision/10</link><pubDate>Thu, 03 Jun 2021 21:52:21 GMT</pubDate><guid isPermaLink="false">d3a83456-d57b-489c-a84c-4e8267bb592a:9da37afe-6886-45be-8183-c3d147e443db</guid><dc:creator>Nicholas Van Dyke</dc:creator><comments>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited#comments</comments><description>Revision 10 posted to Appian Knowledge Base by Nicholas Van Dyke on 6/3/2021 9:52:21 PM&lt;br /&gt;
&lt;h2&gt;&lt;span&gt;Symptoms&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;After modifying a CDT, the CDT fields are no longer present and the following message is observed when the object is opened in Designer: &lt;code&gt;&amp;quot;Simple Types cannot be edited&amp;quot;&lt;/code&gt;. This can also be seen on a parent or child of the CDT that was modified.&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;img alt=" " border="0" src="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-11/SimpleTypes.png" /&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Cause&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;This issue has been reported to the Appian Product Team. The reference number for this issue is &lt;strong&gt;AN-182130.&lt;/strong&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;This issue has been hotfixed via &lt;strong&gt;AN-182130&lt;/strong&gt;&amp;nbsp;in Appian 20.3.830.0, 20.4.795.0, and 21.1.495.0.&lt;/span&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Workaround&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;To workaround the issue, perform &lt;strong&gt;one&lt;/strong&gt; of the following steps:&lt;/span&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;Export the CDT from another environment, and import into the affected environment.&lt;/li&gt;
&lt;li&gt;Delete and re-create the CDT.&lt;/li&gt;
&lt;/ul&gt;
&lt;h2&gt;&lt;span&gt;Affected Versions&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;This article applies to&amp;nbsp;Appian version 20.3 and later.&lt;/p&gt;
&lt;p&gt;&lt;span&gt;Last Reviewed: June 2021&lt;/span&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: CDTs, known issues, application design, open issues&lt;/div&gt;
</description></item><item><title>KB-2185 CDT shows no fields and message "Simple Types cannot be edited"</title><link>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited/revision/8</link><pubDate>Tue, 11 May 2021 00:43:59 GMT</pubDate><guid isPermaLink="false">d3a83456-d57b-489c-a84c-4e8267bb592a:9da37afe-6886-45be-8183-c3d147e443db</guid><dc:creator>Parmida Borhani</dc:creator><comments>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited#comments</comments><description>Revision 8 posted to Appian Knowledge Base by Parmida Borhani on 5/11/2021 12:43:59 AM&lt;br /&gt;
&lt;h2&gt;&lt;span&gt;Symptoms&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;After modifying a CDT, the CDT fields are no longer present and the following message is observed when the object is opened in Designer: &lt;code&gt;&amp;quot;Simple Types cannot be edited&amp;quot;&lt;/code&gt;. This can also be seen on a parent or child of the CDT that was modified.&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;img alt=" " border="0" src="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-13/SimpleTypes.png" /&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Cause&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;This issue has been reported to the Appian Product Team. The reference number for this issue is &lt;strong&gt;AN-182130.&lt;/strong&gt;&lt;/span&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Workaround&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;To workaround the issue, perform &lt;strong&gt;one&lt;/strong&gt; of the following steps:&lt;/span&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;Export the CDT from another environment, and import into the affected environment.&lt;/li&gt;
&lt;li&gt;Delete and re-create the CDT.&lt;/li&gt;
&lt;/ul&gt;
&lt;h2&gt;&lt;span&gt;Affected Versions&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;This article applies to&amp;nbsp;Appian version 19.1 and later.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: CDTs, known issues, application design, open issues&lt;/div&gt;
</description></item><item><title>KB-2185 CDT shows no fields and message "Simple Types cannot be edited"</title><link>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited/revision/9</link><pubDate>Tue, 11 May 2021 00:43:59 GMT</pubDate><guid isPermaLink="false">d3a83456-d57b-489c-a84c-4e8267bb592a:9da37afe-6886-45be-8183-c3d147e443db</guid><dc:creator>Parmida Borhani</dc:creator><comments>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited#comments</comments><description>Revision 9 posted to Appian Knowledge Base by Parmida Borhani on 5/11/2021 12:43:59 AM&lt;br /&gt;
&lt;h2&gt;&lt;span&gt;Symptoms&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;After modifying a CDT, the CDT fields are no longer present and the following message is observed when the object is opened in Designer: &lt;code&gt;&amp;quot;Simple Types cannot be edited&amp;quot;&lt;/code&gt;. This can also be seen on a parent or child of the CDT that was modified.&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;img alt=" " border="0" src="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-11/SimpleTypes.png" /&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Cause&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;This issue has been reported to the Appian Product Team. The reference number for this issue is &lt;strong&gt;AN-182130.&lt;/strong&gt;&lt;/span&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Workaround&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;To workaround the issue, perform &lt;strong&gt;one&lt;/strong&gt; of the following steps:&lt;/span&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;Export the CDT from another environment, and import into the affected environment.&lt;/li&gt;
&lt;li&gt;Delete and re-create the CDT.&lt;/li&gt;
&lt;/ul&gt;
&lt;h2&gt;&lt;span&gt;Affected Versions&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;This article applies to&amp;nbsp;Appian version 19.1 and later.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: CDTs, known issues, application design, open issues&lt;/div&gt;
</description></item><item><title>DRAFT KB-[SP-6223] CDT shows no fields and message "Simple Types cannot be edited"</title><link>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited/revision/7</link><pubDate>Tue, 11 May 2021 00:42:12 GMT</pubDate><guid isPermaLink="false">d3a83456-d57b-489c-a84c-4e8267bb592a:9da37afe-6886-45be-8183-c3d147e443db</guid><dc:creator>Parmida Borhani</dc:creator><comments>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited#comments</comments><description>Revision 7 posted to Appian Knowledge Base by Parmida Borhani on 5/11/2021 12:42:12 AM&lt;br /&gt;
&lt;h2&gt;&lt;span&gt;Symptoms&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;After modifying a CDT, the following message is observed when opened in Designer: &lt;code&gt;&amp;quot;Simple Types cannot be edited&amp;quot;&lt;/code&gt;. This can also be seen on a parent or child of the CDT that was modified.&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;img alt=" " border="0" src="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-13/SimpleTypes.png" /&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Cause&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;This issue has been reported to the Appian Product Team. The reference number for this issue is &lt;strong&gt;AN-182130.&lt;/strong&gt;&lt;/span&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Workaround&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;To workaround the issue, perform &lt;strong&gt;one&lt;/strong&gt; of the following steps:&lt;/span&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;Export the CDT from another environment, and import into the affected environment.&lt;/li&gt;
&lt;li&gt;Delete and re-create the CDT.&lt;/li&gt;
&lt;/ul&gt;
&lt;h2&gt;&lt;span&gt;Affected Versions&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;This article applies to&amp;nbsp;Appian version 19.1 and later.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: CDTs, known issues, application design, open issues&lt;/div&gt;
</description></item><item><title>DRAFT KB-[SP-6223] CDT shows no fields and message "Simple Types cannot be edited"</title><link>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited/revision/6</link><pubDate>Mon, 10 May 2021 13:33:14 GMT</pubDate><guid isPermaLink="false">d3a83456-d57b-489c-a84c-4e8267bb592a:9da37afe-6886-45be-8183-c3d147e443db</guid><dc:creator>Zach Puderbach</dc:creator><comments>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited#comments</comments><description>Revision 6 posted to Appian Knowledge Base by Zach Puderbach on 5/10/2021 1:33:14 PM&lt;br /&gt;
&lt;h2&gt;&lt;span&gt;Symptoms&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;After modifying a CDT, it or a parent or child&amp;nbsp;CDT, shows the the following message when opened in designer: &amp;quot;Simple Types cannot be edited&amp;quot;.&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;img alt=" " border="0" src="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-13/SimpleTypes.png" /&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Cause&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;This issue has been reported to the Appian Product Team. The reference number for this issue is &lt;strong&gt;AN-182130.&lt;/strong&gt;&lt;/span&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Workaround&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;To workaround the issue, perform one of the following steps:&lt;/span&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;Export the CDT from another environment, and import into the affected environment.&lt;/li&gt;
&lt;li&gt;Delete and re-create the CDT.&lt;/li&gt;
&lt;/ul&gt;
&lt;h2&gt;&lt;span&gt;Affected Versions&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;This article applies to&amp;nbsp;Appian version 19.1 and later.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: CDTs, known issues, application design, open issues&lt;/div&gt;
</description></item><item><title>DRAFT KB-[SP-6223] CDT shows no fields and message "Simple Types cannot be edited"</title><link>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited/revision/5</link><pubDate>Mon, 10 May 2021 13:32:13 GMT</pubDate><guid isPermaLink="false">d3a83456-d57b-489c-a84c-4e8267bb592a:9da37afe-6886-45be-8183-c3d147e443db</guid><dc:creator>Zach Puderbach</dc:creator><comments>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited#comments</comments><description>Revision 5 posted to Appian Knowledge Base by Zach Puderbach on 5/10/2021 1:32:13 PM&lt;br /&gt;
&lt;h2&gt;&lt;span&gt;Symptoms&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;After modifying a CDT, it or a parent or child&amp;nbsp;CDT, shows the the following message when opened in designer: &amp;quot;Simple Types cannot be edited&amp;quot;.&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;img alt=" " border="0" src="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-13/SimpleTypes.png" /&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Cause&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;This issue has been reported to the Appian Product Team. The reference number for this issue is &lt;strong&gt;AN-182130.&lt;/strong&gt;&lt;/span&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Workaround&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;To workaround the issue, perform one of the following steps:&lt;/span&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;Export the CDT from a higher environment, and import into the affected environment.&lt;/li&gt;
&lt;li&gt;Delete and re-create the CDT.&lt;/li&gt;
&lt;/ul&gt;
&lt;h2&gt;&lt;span&gt;Affected Versions&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;This article applies to&amp;nbsp;Appian version 19.1 and later.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: CDTs, known issues, application design, open issues&lt;/div&gt;
</description></item><item><title>DRAFT KB-[SP-6223] CDT shows no fields and message "Simple Types cannot be edited"</title><link>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited/revision/4</link><pubDate>Thu, 06 May 2021 14:12:40 GMT</pubDate><guid isPermaLink="false">d3a83456-d57b-489c-a84c-4e8267bb592a:9da37afe-6886-45be-8183-c3d147e443db</guid><dc:creator>Zach Puderbach</dc:creator><comments>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited#comments</comments><description>Revision 4 posted to Appian Knowledge Base by Zach Puderbach on 5/6/2021 2:12:40 PM&lt;br /&gt;
&lt;h2&gt;&lt;span&gt;Symptoms&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;After modifying a CDT, or a related CDT, &amp;quot;Simple Types cannot be edited&amp;quot;.&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;img alt=" " border="0" src="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-13/SimpleTypes.png" /&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Cause&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;This issue has been reported to the Appian Product Team. The reference number for this issue is &lt;strong&gt;AN-182130.&lt;/strong&gt;&lt;/span&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Workaround&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;To workaround the issue, perform one of the following steps:&lt;/span&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;Export the CDT from a higher environment, and import into the affected environment.&lt;/li&gt;
&lt;li&gt;Delete and re-create the CDT.&lt;/li&gt;
&lt;/ul&gt;
&lt;h2&gt;&lt;span&gt;Affected Versions&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;This article applies to&amp;nbsp;Appian version 19.1 and later.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: CDTs, known issues, application design, open issues&lt;/div&gt;
</description></item><item><title>DRAFT KB-[SP-6223] CDT shows no fields and message "Simple Types cannot be edited"</title><link>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited/revision/3</link><pubDate>Thu, 06 May 2021 14:07:48 GMT</pubDate><guid isPermaLink="false">d3a83456-d57b-489c-a84c-4e8267bb592a:9da37afe-6886-45be-8183-c3d147e443db</guid><dc:creator>Zach Puderbach</dc:creator><comments>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited#comments</comments><description>Revision 3 posted to Appian Knowledge Base by Zach Puderbach on 5/6/2021 2:07:48 PM&lt;br /&gt;
&lt;h2&gt;&lt;span&gt;Symptoms&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;After modifying a CDT, or a related CDT, &amp;quot;Simple Types cannot be edited&amp;quot;.&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Cause&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;This issue has been reported to the Appian Product Team. The reference number for this issue is &lt;strong&gt;AN-182130.&lt;/strong&gt;&lt;/span&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Workaround&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;To workaround the issue, do one of the following:&lt;/span&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;Export the CDT from a higher environment, and import into the affected environment&lt;/li&gt;
&lt;li&gt;Delete and re-create the CDT&lt;/li&gt;
&lt;/ul&gt;
&lt;h2&gt;&lt;span&gt;Affected Versions&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;This article applies to all versions of Appian Cloud.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: known issues, application design, open issues&lt;/div&gt;
</description></item><item><title>DRAFT KB-[SP-6223] CDT shows no fields and message "Simple Types cannot be edited"</title><link>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited/revision/2</link><pubDate>Thu, 06 May 2021 14:05:38 GMT</pubDate><guid isPermaLink="false">d3a83456-d57b-489c-a84c-4e8267bb592a:9da37afe-6886-45be-8183-c3d147e443db</guid><dc:creator>Zach Puderbach</dc:creator><comments>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited#comments</comments><description>Revision 2 posted to Appian Knowledge Base by Zach Puderbach on 5/6/2021 2:05:38 PM&lt;br /&gt;
&lt;h2&gt;&lt;span&gt;Symptoms&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;After modifying a CDT, or a related CDT, &amp;quot;Simple Types cannot be edited&amp;quot;.&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Cause&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;This issue has been reported to the Appian Product Team. The reference number for this issue is &lt;strong&gt;AN-182130.&lt;/strong&gt;&lt;/span&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Workaround&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;To workaround the issue, do one of the following:&lt;/span&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;Export the CDT from a higher environment, and import into the affected environment&lt;/li&gt;
&lt;li&gt;Delete and re-create the CDT&lt;/li&gt;
&lt;/ul&gt;
&lt;h2&gt;&lt;span&gt;Affected Versions&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;This article applies to all versions of Appian Cloud.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: known issues, application design, open issues&lt;/div&gt;
</description></item><item><title>DRAFT KB-[SP-6223] CDT shows no fields and message "Simple Types cannot be edited"</title><link>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited/revision/1</link><pubDate>Thu, 06 May 2021 13:53:59 GMT</pubDate><guid isPermaLink="false">d3a83456-d57b-489c-a84c-4e8267bb592a:9da37afe-6886-45be-8183-c3d147e443db</guid><dc:creator>Zach Puderbach</dc:creator><comments>https://community.appian.com/support/w/kb/2353/kb-2185-cdt-shows-no-fields-and-message-simple-types-cannot-be-edited#comments</comments><description>Revision 1 posted to Appian Knowledge Base by Zach Puderbach on 5/6/2021 1:53:59 PM&lt;br /&gt;

&lt;h2&gt;&lt;span&gt;Symptoms&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;After modifying a CDT, or a related CDT, &amp;quot;Simple Types cannot be edited&amp;quot;.&lt;/span&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Cause&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;This issue has been reported to the Appian Product Team. The reference number for this issue is &lt;strong&gt;AN-182130.&lt;/strong&gt;&lt;/span&gt;&lt;/p&gt;
&lt;h2&gt;&lt;span&gt;Workaround&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;span&gt;To workaround the issue, do one of the following:&lt;/span&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;Export the CDT from a higher environment, and import into the affected environment&lt;/li&gt;
&lt;li&gt;Delete and re-create the CDT&lt;/li&gt;
&lt;/ul&gt;
&lt;h2&gt;&lt;span&gt;Affected Versions&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;This article applies to all versions of Appian Cloud.&lt;/p&gt;
&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: known issues, application design, open issues&lt;/div&gt;
</description></item></channel></rss>