diff --git a/modules/cms-kit/src/Volo.CmsKit.Domain/Volo/CmsKit/Reactions/DefaultReactionDefinitionStore.cs b/modules/cms-kit/src/Volo.CmsKit.Domain/Volo/CmsKit/Reactions/DefaultReactionDefinitionStore.cs
index b2e554294e..5705a4c091 100644
--- a/modules/cms-kit/src/Volo.CmsKit.Domain/Volo/CmsKit/Reactions/DefaultReactionDefinitionStore.cs
+++ b/modules/cms-kit/src/Volo.CmsKit.Domain/Volo/CmsKit/Reactions/DefaultReactionDefinitionStore.cs
@@ -46,6 +46,12 @@ namespace Volo.CmsKit.Reactions
             return Task.FromResult(isDefined);
         }
 
+        /// <summary>
+        /// Gets single <see cref="ReactionEntityTypeDefinition"/> by entityType.
+        /// </summary>
+        /// <param name="entityType">EntityType to get definition.</param>
+        /// <exception cref="EntityCantHaveReactionException">Thrown when EntityType is not configured as taggable.</exception>
+        /// <exception cref="InvalidOperationException">More than one element satisfies the condition in predicate.</exception>
         public virtual Task<ReactionEntityTypeDefinition> GetAsync([NotNull] string entityType)
         {
             Check.NotNullOrWhiteSpace(entityType, nameof(entityType));