Drop Phased-Out Features
Upgrade cmseditlink to manageContent tag
The hst:cmseditlink JSP tag was deprecated since version 12.2 and has been removed in version 13. If your project is still using hst:cmseditlink tags, you must upgrade those tags to the hst:manageContent tag (as described in Upgrade 12.1 to 12.2).
If you positioned the buttons using the .hst-cmseditlink CSS selector, replace that selector with .hst-fab, as this CSS class has been renamed.
Remove @DocumentLink Annotation
The @DocumentLink annotation was deprecated since version 12.3 and has been removed in version 13. If your project is still using the @DocumentLink annotation, it must be removed. Use the Manage Content button instead to enable users to create new documents in the Channels perspective. Use the @JcrPath annotation to enable users to select documents.
Remove @Color Annotations
The @Color annotation for getter methods of ParametersInfo interfaces was deprecated since version 12.6 and has been removed in version 13. Hexadecimal color values must be entered as regular string values instead.
Replace Label with String Fields
The Label field type in the Document Type Editor was deprecated since version 12.6 and has been removed in version 13. The Label field was once introduced to support translatable strings, but that functionality is now offered through Resource Bundles. If your project uses document fields of type Label, find all nodes of type hipposysedit:field where the property hipposysedit:type has the value Label, and change that value to String.
Replace localizedName with displayName
Method org.hippoecm.hst.content.beans.standard.HippItem.getLocalizedName() was deprecated in 12 and now removed in 13. The compiler will see this when used in Java but not in rendering template code. Please check occurences of .localizedName is ftl or jsp files and replace it with .displayName if it concerns folder or document beans.