diff --git a/+file/fillClass.m b/+file/fillClass.m
index 21a10f95..8a8bec85 100644
--- a/+file/fillClass.m
+++ b/+file/fillClass.m
@@ -122,7 +122,7 @@
         classprops,...
         namespace);
     setterFcns = file.fillSetters(setdiff(nonInherited, union(readonly, hiddenAndReadonly)));
-    validatorFcns = file.fillValidators(allProperties, classprops, namespace);
+    validatorFcns = file.fillValidators(allProperties, classprops, namespace, namespace.getFullClassName(name), inherited);
     exporterFcns = file.fillExport(nonInherited, class, depnm);
     methodBody = strjoin({constructorBody...
         '%% SETTERS' setterFcns...
diff --git a/+file/fillValidators.m b/+file/fillValidators.m
index 214cb93d..caacadb2 100644
--- a/+file/fillValidators.m
+++ b/+file/fillValidators.m
@@ -1,18 +1,27 @@
-function validationStr = fillValidators(propnames, props, namespacereg)
+function validationStr = fillValidators(propnames, props, namespacereg, className, inherited)
     validationStr = '';
     for i=1:length(propnames)
         nm = propnames{i};
         prop = props(nm);
 
-        % if readonly and value exists then ignore
+
         if isa(prop, 'file.Attribute') && prop.readonly && ~isempty(prop.value)
-            continue;
-        end
-        if startsWith(class(prop), 'file.')
-            validationBody = fillUnitValidation(nm, prop, namespacereg);
-        else % primitive type
-            validationBody = fillDtypeValidation(nm, prop);
+            % Need to add a validator for inherited and readonly properties. In 
+            % the superclass these properties might not be read only and due to
+            % inheritance its not possible to change property attributes
+            if any(strcmp(nm, inherited))
+                validationBody = fillReadOnlyValidator(nm, prop.value, className);
+            else
+                continue
+            end
+        else
+            if startsWith(class(prop), 'file.')
+                validationBody = fillUnitValidation(nm, prop, namespacereg);
+            else % primitive type
+                validationBody = fillDtypeValidation(nm, prop);
+            end
         end
+
         headerStr = ['function val = validate_' nm '(obj, val)'];
         if isempty(validationBody)
             funcstionStr = [headerStr newline 'end'];
@@ -279,4 +288,34 @@
         fdvstr = [fdvstr ...
             'val = types.util.checkDtype(''' name ''', ''' ts ''', val);'];
     end
+end
+
+function fdvstr = fillReadOnlyValidator(name, value, className)
+
+    classNameSplit = strsplit(className, '.');
+    shortName = classNameSplit{end};
+
+    errorStr = sprintf( 'error(''Unable to set the ''''%s'''' property of class ''''<a href="matlab:doc %s">%s</a>'''' because it is read-only.'')', name, className, shortName);  
+
+    if ischar(value)
+        condition = strjoin({ ...
+            sprintf('if isequal(val, ''%s'')', value), ...
+            sprintf('    val = ''%s'';', value ), ...
+                    'else' }, newline);
+    elseif isnumeric(value) || islogical(value)
+        condition = strjoin({ ...
+            sprintf('if isequal(val, %d)', value), ...
+            sprintf('    val = %d;', value ), ...
+                    'else' }, newline);
+    else
+        % Note: According to the documentation for Attribute specification keys
+        % (https://schema-language.readthedocs.io/en/latest/description.html#sec-attributes-spec),
+        % the above cases should be sufficient.
+        error('Unhandled case')
+    end
+    
+    fdvstr = strjoin({...
+            condition, ...
+            sprintf('    %s', errorStr), ...
+            'end' }, newline );
 end
\ No newline at end of file
diff --git a/+io/timestamp2datetime.m b/+io/timestamp2datetime.m
index a736f7cc..1869d633 100644
--- a/+io/timestamp2datetime.m
+++ b/+io/timestamp2datetime.m
@@ -48,9 +48,9 @@
             , 'Day', ymdStamp(7:8) ...
         );
     end
-    Datetime.Year = str2double(YmdToken.Year);
-    Datetime.Month = str2double(YmdToken.Month);
     Datetime.Day = str2double(YmdToken.Day);
+    Datetime.Month = str2double(YmdToken.Month);
+    Datetime.Year = str2double(YmdToken.Year);
     assert(~isnat(Datetime), errorId, sprintf(errorTemplate, 'non-numeric YMD values detected'));
     
     %% HMiS TZ
diff --git a/+tests/+unit/linkTest.m b/+tests/+unit/linkTest.m
index f3d22f83..1b74a569 100644
--- a/+tests/+unit/linkTest.m
+++ b/+tests/+unit/linkTest.m
@@ -67,7 +67,7 @@ function testExternalResolution(testCase)
     'table', types.untyped.ObjectView('/acquisition/es1'),...
     'description', 'dtr stub that points to electrical series illegally'); % do not do this at home.
 expected = types.core.ElectricalSeries('data', expectedData,...
-    'data_unit', 'unit',...
+    'data_unit', 'volts', ...
     'electrodes', stubDtr);
 nwb.acquisition.set('es1', expected);
 nwb.export('test1.nwb');