diff --git a/io.catenax.week_based_material_demand/1.0.0/WeekBasedMaterialDemand.ttl b/io.catenax.week_based_material_demand/1.0.0/WeekBasedMaterialDemand.ttl
index 4eb1afff..99766a04 100644
--- a/io.catenax.week_based_material_demand/1.0.0/WeekBasedMaterialDemand.ttl
+++ b/io.catenax.week_based_material_demand/1.0.0/WeekBasedMaterialDemand.ttl
@@ -23,7 +23,7 @@
 @prefix : <urn:bamm:io.catenax.week_based_material_demand:1.0.0#>.
 
 :WeekBasedMaterialDemand a bamm:Aspect;
-    bamm:preferredName "Material Demand"@en;
+    bamm:preferredName "Week-Based Material Demand"@en;
     bamm:description "The requirements of a customer towards a specific supplier for a specific material. Each material demand is unique by its Customer, Supplier and Material Number."@en;
     bamm:properties (:materialDemandId :demandSeries :customer :supplier :unitOfMeasure :materialNumberCustomer [
   bamm:property :materialNumberSupplier;
@@ -42,12 +42,12 @@
     bamm:characteristic :DemandSeriesSet.
 :customer a bamm:Property;
     bamm:preferredName "Customer"@en;
-    bamm:description "A party that requests goods from a supplier."@en;
+    bamm:description "The Business Partner Number (BPNL) of the party requesting materials from a supplier."@en;
     bamm:characteristic :BPNL;
     bamm:exampleValue "BPNL8888888888XX".
 :supplier a bamm:Property;
     bamm:preferredName "Supplier"@en;
-    bamm:description "A party that provides goods to a customer."@en;
+    bamm:description "The Business Partner Number (BPNL) of the party providing materials to a customer."@en;
     bamm:characteristic :BPNL;
     bamm:exampleValue "BPNL6666666666YY".
 :unitOfMeasure a bamm:Property;
@@ -73,7 +73,8 @@
 :changedAt a bamm:Property;
     bamm:preferredName "Changed At"@en;
     bamm:description "Point in time when the material demand was last updated at the customer, either by a human user or an automated process."@en;
-    bamm:characteristic :Timestamp.
+    bamm:characteristic :Timestamp;
+    bamm:exampleValue "2023-03-10T12:27:11.320Z"^^xsd:dateTimeStamp.
 :UUIDv4 a bamm:Characteristic;
     bamm:preferredName "UUIDv4"@en;
     bamm:description "A version 4 UUID is a universally unique identifier that is generated using random 32 hexadecimal characters."@en;
@@ -89,9 +90,9 @@
     bamm:dataType xsd:string.
 :expectedSupplierLocation a bamm:Property;
     bamm:preferredName "Expected Supplier Location"@en;
-    bamm:description "The location from where the customer expects the supplier to fulfill the demands of the demand series. Used as informational field only, not for assigning demand series to capacity groups."@en;
+    bamm:description "The BPNS number of the site from where the customer expects the supplier to fulfill the demands of the demand series. Used as informational field only, not for assigning demand series to capacity groups."@en;
     bamm:characteristic :BPNS;
-    bamm:exampleValue "Plant Hamburg".
+    bamm:exampleValue "BPNS8888888888XX".
 :BPNS a bamm:Characteristic;
     bamm:preferredName "Business Partner Number Site"@en;
     bamm:description "BPNS represents a site which can be a production plant inside one location."@en;
@@ -132,9 +133,9 @@
     bamm-c:constraint :UUIDv4RegularExpression.
 :customerLocation a bamm:Property;
     bamm:preferredName "Customer Location"@en;
-    bamm:description "Location at which the customer needs the specified material for this demand series."@en;
+    bamm:description "The BPNS number of the site at which the customer needs the specified material for this demand series."@en;
     bamm:characteristic :BPNS;
-    bamm:exampleValue "Plant Bremen".
+    bamm:exampleValue "BPNS8888888888XX".
 :demandCategory a bamm:Property;
     bamm:preferredName "Demand Category"@en;
     bamm:description "Type of demand for this demand series."@en;
@@ -188,7 +189,7 @@
     bamm:description "A single demand for a given calendar week."@en;
     bamm:properties (:calendarWeek :demand).
 :demandCategoryCode a bamm:Property;
-    bamm:description "The code identifiying a demand category."@en;
+    bamm:description "The code identifying a demand category."@en;
     bamm:characteristic :DemandCategoryCode.
 :demandCategoryName a bamm:Property;
     bamm:description "The name describing a demand category."@en;
@@ -200,12 +201,12 @@
     bamm:exampleValue "2022-08-01"^^xsd:date.
 :demand a bamm:Property;
     bamm:preferredName "Demand"@en;
-    bamm:description "Quantity of goods required in the specified calendar week."@en;
+    bamm:description "Quantity of materials required in the specified calendar week."@en;
     bamm:characteristic :Quantity;
     bamm:exampleValue "1"^^xsd:decimal.
 :DemandCategoryCode a bamm-c:Code;
     bamm:preferredName "Demand Category Code"@en;
-    bamm:description "The code identifiying a demand category."@en;
+    bamm:description "The code identifying a demand category."@en;
     bamm:dataType xsd:string.
 :CalendarWeek a bamm:Characteristic;
     bamm:preferredName "Calendar Week"@en;