diff --git a/lib/recombee_api_client.rb b/lib/recombee_api_client.rb
index 244f238..2929bd0 100644
--- a/lib/recombee_api_client.rb
+++ b/lib/recombee_api_client.rb
@@ -18,7 +18,7 @@ class RecombeeClient
     include HTTParty
 
     BATCH_MAX_SIZE = 10000
-    USER_AGENT = {'User-Agent' => 'recombee-ruby-api-client/2.1.0'}
+    USER_AGENT = {'User-Agent' => 'recombee-ruby-api-client/2.2.0'}
 
     ##
     #   - +account+ -> Name of your account at Recombee
diff --git a/lib/recombee_api_client/api/add_bookmark.rb b/lib/recombee_api_client/api/add_bookmark.rb
index 114b2bb..446cf99 100644
--- a/lib/recombee_api_client/api/add_bookmark.rb
+++ b/lib/recombee_api_client/api/add_bookmark.rb
@@ -10,7 +10,7 @@ module RecombeeApiClient
   #Adds a bookmark of a given item made by a given user.
   #
   class AddBookmark < ApiRequest
-    attr_reader :user_id, :item_id, :timestamp, :cascade_create
+    attr_reader :user_id, :item_id, :timestamp, :cascade_create, :recomm_id
     attr_accessor :timeout
     attr_accessor :ensure_https
   
@@ -22,6 +22,7 @@ class AddBookmark < ApiRequest
   # * *Optional arguments (given as hash optional)*
   #   - +timestamp+ -> UTC timestamp of the bookmark as ISO8601-1 pattern or UTC epoch time. The default value is the current time.
   #   - +cascadeCreate+ -> Sets whether the given user/item should be created if not present in the database.
+  #   - +recommId+ -> If this bookmark is based on a recommendation request, `recommId` is the id of the clicked recommendation.
   #
     def initialize(user_id, item_id, optional = {})
       @user_id = user_id
@@ -29,11 +30,12 @@ def initialize(user_id, item_id, optional = {})
       optional = normalize_optional(optional)
       @timestamp = optional['timestamp']
       @cascade_create = optional['cascadeCreate']
+      @recomm_id = optional['recommId']
       @optional = optional
       @timeout = 1000
       @ensure_https = false
       @optional.each do |par, _|
-        fail UnknownOptionalParameter.new(par) unless ["timestamp","cascadeCreate"].include? par
+        fail UnknownOptionalParameter.new(par) unless ["timestamp","cascadeCreate","recommId"].include? par
       end
     end
   
@@ -49,6 +51,7 @@ def body_parameters
       p['itemId'] = @item_id
       p['timestamp'] = @optional['timestamp'] if @optional.include? 'timestamp'
       p['cascadeCreate'] = @optional['cascadeCreate'] if @optional.include? 'cascadeCreate'
+      p['recommId'] = @optional['recommId'] if @optional.include? 'recommId'
       p
     end
   
diff --git a/lib/recombee_api_client/api/add_cart_addition.rb b/lib/recombee_api_client/api/add_cart_addition.rb
index 7b178a1..49cd285 100644
--- a/lib/recombee_api_client/api/add_cart_addition.rb
+++ b/lib/recombee_api_client/api/add_cart_addition.rb
@@ -10,7 +10,7 @@ module RecombeeApiClient
   #Adds a cart addition of a given item made by a given user.
   #
   class AddCartAddition < ApiRequest
-    attr_reader :user_id, :item_id, :timestamp, :cascade_create, :amount, :price
+    attr_reader :user_id, :item_id, :timestamp, :cascade_create, :amount, :price, :recomm_id
     attr_accessor :timeout
     attr_accessor :ensure_https
   
@@ -24,6 +24,7 @@ class AddCartAddition < ApiRequest
   #   - +cascadeCreate+ -> Sets whether the given user/item should be created if not present in the database.
   #   - +amount+ -> Amount (number) added to cart. The default is 1. For example if `user-x` adds two `item-y` during a single order (session...), the `amount` should equal to 2.
   #   - +price+ -> Price of the added item. If `amount` is greater than 1, sum of prices of all the items should be given.
+  #   - +recommId+ -> If this cart addition is based on a recommendation request, `recommId` is the id of the clicked recommendation.
   #
     def initialize(user_id, item_id, optional = {})
       @user_id = user_id
@@ -33,11 +34,12 @@ def initialize(user_id, item_id, optional = {})
       @cascade_create = optional['cascadeCreate']
       @amount = optional['amount']
       @price = optional['price']
+      @recomm_id = optional['recommId']
       @optional = optional
       @timeout = 1000
       @ensure_https = false
       @optional.each do |par, _|
-        fail UnknownOptionalParameter.new(par) unless ["timestamp","cascadeCreate","amount","price"].include? par
+        fail UnknownOptionalParameter.new(par) unless ["timestamp","cascadeCreate","amount","price","recommId"].include? par
       end
     end
   
@@ -55,6 +57,7 @@ def body_parameters
       p['cascadeCreate'] = @optional['cascadeCreate'] if @optional.include? 'cascadeCreate'
       p['amount'] = @optional['amount'] if @optional.include? 'amount'
       p['price'] = @optional['price'] if @optional.include? 'price'
+      p['recommId'] = @optional['recommId'] if @optional.include? 'recommId'
       p
     end
   
diff --git a/lib/recombee_api_client/api/add_detail_view.rb b/lib/recombee_api_client/api/add_detail_view.rb
index ffc22e3..fd3c3c5 100644
--- a/lib/recombee_api_client/api/add_detail_view.rb
+++ b/lib/recombee_api_client/api/add_detail_view.rb
@@ -10,7 +10,7 @@ module RecombeeApiClient
   #Adds a detail view of a given item made by a given user.
   #
   class AddDetailView < ApiRequest
-    attr_reader :user_id, :item_id, :timestamp, :duration, :cascade_create
+    attr_reader :user_id, :item_id, :timestamp, :duration, :cascade_create, :recomm_id
     attr_accessor :timeout
     attr_accessor :ensure_https
   
@@ -23,6 +23,7 @@ class AddDetailView < ApiRequest
   #   - +timestamp+ -> UTC timestamp of the view as ISO8601-1 pattern or UTC epoch time. The default value is the current time.
   #   - +duration+ -> Duration of the view
   #   - +cascadeCreate+ -> Sets whether the given user/item should be created if not present in the database.
+  #   - +recommId+ -> If this detail view is based on a recommendation request, `recommId` is the id of the clicked recommendation.
   #
     def initialize(user_id, item_id, optional = {})
       @user_id = user_id
@@ -31,11 +32,12 @@ def initialize(user_id, item_id, optional = {})
       @timestamp = optional['timestamp']
       @duration = optional['duration']
       @cascade_create = optional['cascadeCreate']
+      @recomm_id = optional['recommId']
       @optional = optional
       @timeout = 1000
       @ensure_https = false
       @optional.each do |par, _|
-        fail UnknownOptionalParameter.new(par) unless ["timestamp","duration","cascadeCreate"].include? par
+        fail UnknownOptionalParameter.new(par) unless ["timestamp","duration","cascadeCreate","recommId"].include? par
       end
     end
   
@@ -52,6 +54,7 @@ def body_parameters
       p['timestamp'] = @optional['timestamp'] if @optional.include? 'timestamp'
       p['duration'] = @optional['duration'] if @optional.include? 'duration'
       p['cascadeCreate'] = @optional['cascadeCreate'] if @optional.include? 'cascadeCreate'
+      p['recommId'] = @optional['recommId'] if @optional.include? 'recommId'
       p
     end
   
diff --git a/lib/recombee_api_client/api/add_item_property.rb b/lib/recombee_api_client/api/add_item_property.rb
index 4ad494b..c5233a2 100644
--- a/lib/recombee_api_client/api/add_item_property.rb
+++ b/lib/recombee_api_client/api/add_item_property.rb
@@ -20,6 +20,22 @@ class AddItemProperty < ApiRequest
   #
   #   - +type+ -> Value type of the item property to be created. One of: `int`, `double`, `string`, `boolean`, `timestamp`, `set`, `image` or `imageList`.
   #
+  #* `int`- Signed integer number.
+  #
+  #* `double` - Floating point number. It uses 64-bit base-2 format (IEEE 754 standard).
+  #
+  #* `string` - UTF-8 string.
+  #
+  #* `boolean` - *true* / *false*
+  #
+  #* `timestamp` - Value representing date and time.
+  #
+  #* `set` - Set of strings.
+  #
+  #* `image` - URL of an image (`jpeg`, `png` or `gif`).
+  #
+  #* `imageList` - List of URLs that refer to images. 
+  #
   #
     def initialize(property_name, type)
       @property_name = property_name
diff --git a/lib/recombee_api_client/api/add_purchase.rb b/lib/recombee_api_client/api/add_purchase.rb
index f643c79..89ae8b2 100644
--- a/lib/recombee_api_client/api/add_purchase.rb
+++ b/lib/recombee_api_client/api/add_purchase.rb
@@ -10,7 +10,7 @@ module RecombeeApiClient
   #Adds a purchase of a given item made by a given user.
   #
   class AddPurchase < ApiRequest
-    attr_reader :user_id, :item_id, :timestamp, :cascade_create, :amount, :price, :profit
+    attr_reader :user_id, :item_id, :timestamp, :cascade_create, :amount, :price, :profit, :recomm_id
     attr_accessor :timeout
     attr_accessor :ensure_https
   
@@ -25,6 +25,7 @@ class AddPurchase < ApiRequest
   #   - +amount+ -> Amount (number) of purchased items. The default is 1. For example if `user-x` purchases two `item-y` during a single order (session...), the `amount` should equal to 2.
   #   - +price+ -> Price paid by the user for the item. If `amount` is greater than 1, sum of prices of all the items should be given.
   #   - +profit+ -> Your profit from the purchased item. The profit is natural in e-commerce domain (for example if `user-x` purchases `item-y` for $100 and the gross margin is 30 %, then the profit is $30), but is applicable also in other domains (for example at a news company it may be income from displayed advertisement on article page). If `amount` is greater than 1, sum of profit of all the items should be given.
+  #   - +recommId+ -> If this purchase is based on a recommendation request, `recommId` is the id of the clicked recommendation.
   #
     def initialize(user_id, item_id, optional = {})
       @user_id = user_id
@@ -35,11 +36,12 @@ def initialize(user_id, item_id, optional = {})
       @amount = optional['amount']
       @price = optional['price']
       @profit = optional['profit']
+      @recomm_id = optional['recommId']
       @optional = optional
       @timeout = 1000
       @ensure_https = false
       @optional.each do |par, _|
-        fail UnknownOptionalParameter.new(par) unless ["timestamp","cascadeCreate","amount","price","profit"].include? par
+        fail UnknownOptionalParameter.new(par) unless ["timestamp","cascadeCreate","amount","price","profit","recommId"].include? par
       end
     end
   
@@ -58,6 +60,7 @@ def body_parameters
       p['amount'] = @optional['amount'] if @optional.include? 'amount'
       p['price'] = @optional['price'] if @optional.include? 'price'
       p['profit'] = @optional['profit'] if @optional.include? 'profit'
+      p['recommId'] = @optional['recommId'] if @optional.include? 'recommId'
       p
     end
   
diff --git a/lib/recombee_api_client/api/add_rating.rb b/lib/recombee_api_client/api/add_rating.rb
index c3937f8..291af40 100644
--- a/lib/recombee_api_client/api/add_rating.rb
+++ b/lib/recombee_api_client/api/add_rating.rb
@@ -10,7 +10,7 @@ module RecombeeApiClient
   #Adds a rating of given item made by a given user.
   #
   class AddRating < ApiRequest
-    attr_reader :user_id, :item_id, :timestamp, :rating, :cascade_create
+    attr_reader :user_id, :item_id, :timestamp, :rating, :cascade_create, :recomm_id
     attr_accessor :timeout
     attr_accessor :ensure_https
   
@@ -23,6 +23,7 @@ class AddRating < ApiRequest
   # * *Optional arguments (given as hash optional)*
   #   - +timestamp+ -> UTC timestamp of the rating as ISO8601-1 pattern or UTC epoch time. The default value is the current time.
   #   - +cascadeCreate+ -> Sets whether the given user/item should be created if not present in the database.
+  #   - +recommId+ -> If this rating is based on a recommendation request, `recommId` is the id of the clicked recommendation.
   #
     def initialize(user_id, item_id, rating, optional = {})
       @user_id = user_id
@@ -31,11 +32,12 @@ def initialize(user_id, item_id, rating, optional = {})
       optional = normalize_optional(optional)
       @timestamp = optional['timestamp']
       @cascade_create = optional['cascadeCreate']
+      @recomm_id = optional['recommId']
       @optional = optional
       @timeout = 1000
       @ensure_https = false
       @optional.each do |par, _|
-        fail UnknownOptionalParameter.new(par) unless ["timestamp","cascadeCreate"].include? par
+        fail UnknownOptionalParameter.new(par) unless ["timestamp","cascadeCreate","recommId"].include? par
       end
     end
   
@@ -52,6 +54,7 @@ def body_parameters
       p['rating'] = @rating
       p['timestamp'] = @optional['timestamp'] if @optional.include? 'timestamp'
       p['cascadeCreate'] = @optional['cascadeCreate'] if @optional.include? 'cascadeCreate'
+      p['recommId'] = @optional['recommId'] if @optional.include? 'recommId'
       p
     end
   
diff --git a/lib/recombee_api_client/api/add_user_property.rb b/lib/recombee_api_client/api/add_user_property.rb
index ba34cf7..04b63db 100644
--- a/lib/recombee_api_client/api/add_user_property.rb
+++ b/lib/recombee_api_client/api/add_user_property.rb
@@ -18,7 +18,19 @@ class AddUserProperty < ApiRequest
   # * *Required arguments*
   #   - +property_name+ -> Name of the user property to be created. Currently, the following names are reserved:`id`, `userid`, case insensitively. Also, the length of the property name must not exceed 63 characters.
   #
-  #   - +type+ -> Value type of the user property to be created. One of: `int`, `double`, `string`, `boolean`, `timestamp`, `set`
+  #   - +type+ -> Value type of the user property to be created. One of: `int`, `double`, `string`, `boolean`, `timestamp`, `set`.
+  #
+  #* `int` - Signed integer number.
+  #
+  #* `double` - Floating point number. It uses 64-bit base-2 format (IEEE 754 standard).
+  #
+  #* `string` - UTF-8 string.
+  #
+  #* `boolean` - *true* / *false*
+  #
+  #* `timestamp` - Value representing date and time.
+  #
+  #* `set` - Set of strings.
   #
   #
     def initialize(property_name, type)
diff --git a/lib/recombee_api_client/api/merge_users.rb b/lib/recombee_api_client/api/merge_users.rb
index 3608287..3daceec 100644
--- a/lib/recombee_api_client/api/merge_users.rb
+++ b/lib/recombee_api_client/api/merge_users.rb
@@ -10,7 +10,7 @@ module RecombeeApiClient
   #Merges interactions (purchases, ratings, bookmarks, detail views ...) of two different users under a single user ID. This is especially useful for online e-commerce applications working with anonymous users identified by unique tokens such as the session ID. In such applications, it may often happen that a user owns a persistent account, yet accesses the system anonymously while, e.g., putting items into a shopping cart. At some point in time, such as when the user wishes to confirm the purchase, (s)he logs into the system using his/her username and password. The interactions made under anonymous session ID then become connected with the persistent account, and merging these two together becomes desirable.
   #
   #
-  #Merging happens between two users referred to as the *target* and the *source*. After the merge, all the interactions of the source user are attributed to the target user, and the source user is **deleted** unless special parameter `keepSourceUser` is set `true`.
+  #Merging happens between two users referred to as the *target* and the *source*. After the merge, all the interactions of the source user are attributed to the target user, and the source user is **deleted**.
   #
   class MergeUsers < ApiRequest
     attr_reader :target_user_id, :source_user_id, :cascade_create
diff --git a/lib/recombee_api_client/api/set_view_portion.rb b/lib/recombee_api_client/api/set_view_portion.rb
index 9133d1c..e2b3541 100644
--- a/lib/recombee_api_client/api/set_view_portion.rb
+++ b/lib/recombee_api_client/api/set_view_portion.rb
@@ -11,7 +11,7 @@ module RecombeeApiClient
   #If you send new request with the same (`userId`, `itemId`, `sessionId`), the portion gets updated.
   #
   class SetViewPortion < ApiRequest
-    attr_reader :user_id, :item_id, :portion, :session_id, :timestamp, :cascade_create
+    attr_reader :user_id, :item_id, :portion, :session_id, :timestamp, :cascade_create, :recomm_id
     attr_accessor :timeout
     attr_accessor :ensure_https
   
@@ -25,6 +25,7 @@ class SetViewPortion < ApiRequest
   #   - +sessionId+ -> ID of session in which the user viewed the item. Default is `null` (`None`, `nil`, `NULL` etc. depending on language).
   #   - +timestamp+ -> UTC timestamp of the rating as ISO8601-1 pattern or UTC epoch time. The default value is the current time.
   #   - +cascadeCreate+ -> Sets whether the given user/item should be created if not present in the database.
+  #   - +recommId+ -> If this view portion is based on a recommendation request, `recommId` is the id of the clicked recommendation.
   #
     def initialize(user_id, item_id, portion, optional = {})
       @user_id = user_id
@@ -34,11 +35,12 @@ def initialize(user_id, item_id, portion, optional = {})
       @session_id = optional['sessionId']
       @timestamp = optional['timestamp']
       @cascade_create = optional['cascadeCreate']
+      @recomm_id = optional['recommId']
       @optional = optional
       @timeout = 1000
       @ensure_https = false
       @optional.each do |par, _|
-        fail UnknownOptionalParameter.new(par) unless ["sessionId","timestamp","cascadeCreate"].include? par
+        fail UnknownOptionalParameter.new(par) unless ["sessionId","timestamp","cascadeCreate","recommId"].include? par
       end
     end
   
@@ -56,6 +58,7 @@ def body_parameters
       p['sessionId'] = @optional['sessionId'] if @optional.include? 'sessionId'
       p['timestamp'] = @optional['timestamp'] if @optional.include? 'timestamp'
       p['cascadeCreate'] = @optional['cascadeCreate'] if @optional.include? 'cascadeCreate'
+      p['recommId'] = @optional['recommId'] if @optional.include? 'recommId'
       p
     end
   
diff --git a/lib/recombee_api_client/version.rb b/lib/recombee_api_client/version.rb
index 355951d..cf30425 100644
--- a/lib/recombee_api_client/version.rb
+++ b/lib/recombee_api_client/version.rb
@@ -1,3 +1,3 @@
 module RecombeeApiClient
-  VERSION = '2.1.0'
+  VERSION = '2.2.0'
 end