diff --git a/src/ifcopenshell-python/ifcopenshell/util/schema/Pset_IFC4_ADD2.ifc b/src/ifcopenshell-python/ifcopenshell/util/schema/Pset_IFC4_ADD2.ifc
index 65204b0a61..940c2c4d84 100644
--- a/src/ifcopenshell-python/ifcopenshell/util/schema/Pset_IFC4_ADD2.ifc
+++ b/src/ifcopenshell-python/ifcopenshell/util/schema/Pset_IFC4_ADD2.ifc
@@ -3810,7 +3810,7 @@ DATA;
 #3804= IFCRELASSOCIATESLIBRARY('0a7IKIyR97mBLFx1Hw2WxS',$,$,$,(#3796),#3803);
 #3805= IFCLIBRARYREFERENCE($,$,'\X2\662F5426591690E867844EF6\X0\','\X2\8868793A8BE567844EF6662F54268BBE8BA14E3A591690E867844EF6300282E5662FFF0C52198BE567844EF64E3A591690E867844EF6FF0C671D54115EFA7B517269768459164FA73002\X0\','zh-CN',$);
 #3806= IFCRELASSOCIATESLIBRARY('0ny33eYS11mR15A8dSdsB_',$,$,$,(#3796),#3805);
-#3807= IFCSIMPLEPROPERTYTEMPLATE('3MLW9Uqir2HPZ8iRLwgUEW',$,'ThermalTransmittance',$,.P_SINGLEVALUE.,$,$,$,$,$,$,.READWRITE.);
+#3807= IFCSIMPLEPROPERTYTEMPLATE('3MLW9Uqir2HPZ8iRLwgUEW',$,'ThermalTransmittance','Thermal transmittance coefficient (U-Value) of an element, within the direction of the thermal flow (including all materials).',.P_SINGLEVALUE.,'IfcThermalTransmittanceMeasure',$,$,$,$,$,.READWRITE.);
 #3808= IFCSIMPLEPROPERTYTEMPLATE('1s7fxao7L4X9mgLw5vDLbk','LoadBearing','Indicates whether the object is intended to carry loads (TRUE) or not (FALSE).',.P_SINGLEVALUE.,'IfcBoolean',$,$,$,$,$,.READWRITE.);
 #3809= IFCSIMPLEPROPERTYTEMPLATE('1LZHC0qVyHuO00025QrE$V',$,'FireRating','Fire rating for this object.\X\0AIt is given according to the national fire safety classification.',.P_SINGLEVALUE.,'IfcLabel','',$,$,$,$,.READWRITE.);
 #3810= IFCLIBRARYREFERENCE($,$,'Feuerwiderstandsklasse','Feuerwiderstandasklasse gem\S\d\S\_ der nationalen oder regionalen Brandschutzverordnung.','de-DE',$);
@@ -4431,7 +4431,7 @@ DATA;
 #4425= IFCRELASSOCIATESLIBRARY('0xjVVGjq9FHha_VhI4S5F1',$,$,$,(#4417),#4424);
 #4426= IFCLIBRARYREFERENCE($,$,'\X2\662F5426591690E867844EF6\X0\','\X2\8868793A8BE567844EF6662F54268BBE8BA14E3A591690E867844EF6300282E5662FFF0C52198BE567844EF64E3A591690E867844EF6FF0C671D54115EFA7B517269768459164FA73002\X0\','zh-CN',$);
 #4427= IFCRELASSOCIATESLIBRARY('0H77FP34b3XRusar_DVCi_',$,$,$,(#4417),#4426);
-#4428= IFCSIMPLEPROPERTYTEMPLATE('3YhweyeoP4yfJpfFi81P$3',$,'ThermalTransmittance',$,.P_SINGLEVALUE.,$,$,$,$,$,$,.READWRITE.);
+#4428= IFCSIMPLEPROPERTYTEMPLATE('3YhweyeoP4yfJpfFi81P$3',$,'ThermalTransmittance','Thermal transmittance coefficient (U-Value) of an element, within the direction of the thermal flow (including all materials).',.P_SINGLEVALUE.,'IfcThermalTransmittanceMeasure',$,$,$,$,$,.READWRITE.);
 #4429= IFCSIMPLEPROPERTYTEMPLATE('2FnJNsRdfDQ9dzEq8OinWs','LoadBearing','Indicates whether the object is intended to carry loads (TRUE) or not (FALSE).',.P_SINGLEVALUE.,'IfcBoolean',$,$,$,$,$,.READWRITE.);
 #4430= IFCSIMPLEPROPERTYTEMPLATE('0P_KM0qWqHuO00025QrE$V',$,'FireRating','Fire rating for this object.\X\0AIt is given according to the national fire safety classification.',.P_SINGLEVALUE.,'IfcLabel','',$,$,$,$,.READWRITE.);
 #4431= IFCLIBRARYREFERENCE($,$,'Feuerwiderstandsklasse','Feuerwiderstandasklasse gem\S\d\S\_ der nationalen oder regionalen Brandschutzverordnung.','de-DE',$);