Automated vocabulary checks indicate some potential issues

See automated analysis output:

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Aggregation.V1.xml:82 Property Warning: Unspecified Nullable facet defaults to true for property 'Rollup'. It is unusual for properties with default values to be nullable. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Rollup" DefaultValue="MultipleHierarchies" Type="Aggregation.RollupType">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Aggregation.V1.xml:85 Property Warning: Unspecified Nullable facet defaults to true for property 'PropertyRestrictions'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="PropertyRestrictions" DefaultValue="false" Type="Edm.Boolean">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Aggregation.V1.xml:164 Parameter Warning: Unspecified Nullable facet defaults to true for parameter 'MaxDistance'. An explicit Nullable='true' facet is recommended when null parameter values should be permitted.
<Parameter Name="MaxDistance" Type="Edm.Int16"/>

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Aggregation.V1.xml:174 Parameter Warning: Unspecified Nullable facet defaults to true for parameter 'MaxDistance'. An explicit Nullable='true' facet is recommended when null parameter values should be permitted.
<Parameter Name="MaxDistance" Type="Edm.Int16"/>

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Authorization.V1.xml:76 Property Warning: Unspecified Nullable facet defaults to true for property 'RequiredScopes'. It is unusual to for collection-typed properties to allow null items. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="RequiredScopes" Type="Collection(Edm.String)">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Authorization.V1.xml:113 Property Warning: Unspecified Nullable facet defaults to true for property 'Scopes'. It is unusual to for collection-typed properties to allow null items. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Scopes" Type="Collection(Auth.AuthorizationScope)">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Authorization.V1.xml:90 Property Warning: Unspecified Nullable facet defaults to true for property 'Description'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Description" Type="Edm.String">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Authorization.V1.xml:107 Property Warning: Unspecified Nullable facet defaults to true for property 'BearerFormat'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="BearerFormat" Type="Edm.String">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Authorization.V1.xml:116 Property Warning: Unspecified Nullable facet defaults to true for property 'RefreshUrl'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="RefreshUrl" Type="Edm.String">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Authorization.V1.xml:158 Property Warning: Unspecified Nullable facet defaults to true for property 'Description'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Description" Type="Edm.String">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:198 Property Warning: Unspecified Nullable facet defaults to true for property 'Supported'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Supported" Type="Edm.Boolean" DefaultValue="true">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:215 Property Warning: Unspecified Nullable facet defaults to true for property 'Countable'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Countable" Type="Edm.Boolean" DefaultValue="true">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:246 Property Warning: Unspecified Nullable facet defaults to true for property 'FilterFunctions'. It is unusual to for collection-typed properties to allow null items. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="FilterFunctions" Type="Collection(Edm.String)">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:259 Property Warning: Unspecified Nullable facet defaults to true for property 'TopSupported'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="TopSupported" Type="Core.Tag" DefaultValue="true">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:262 Property Warning: Unspecified Nullable facet defaults to true for property 'SkipSupported'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="SkipSupported" Type="Core.Tag" DefaultValue="true">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:265 Property Warning: Unspecified Nullable facet defaults to true for property 'IndexableByKey'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="IndexableByKey" Type="Core.Tag" DefaultValue="true">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:314 Property Warning: Unspecified Nullable facet defaults to true for property 'Supported'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Supported" Type="Edm.Boolean" DefaultValue="true">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:317 Property Warning: Unspecified Nullable facet defaults to true for property 'ContinueOnErrorSupported'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="ContinueOnErrorSupported" Type="Edm.Boolean">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:320 Property Warning: Unspecified Nullable facet defaults to true for property 'ReferencesInRequestBodiesSupported'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="ReferencesInRequestBodiesSupported" Type="Edm.Boolean">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:323 Property Warning: Unspecified Nullable facet defaults to true for property 'ReferencesAcrossChangeSetsSupported'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="ReferencesAcrossChangeSetsSupported" Type="Edm.Boolean">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:326 Property Warning: Unspecified Nullable facet defaults to true for property 'EtagReferencesSupported'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="EtagReferencesSupported" Type="Edm.Boolean">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:339 Property Warning: Unspecified Nullable facet defaults to true for property 'Filterable'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Filterable" Type="Edm.Boolean" DefaultValue="true">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:342 Property Warning: Unspecified Nullable facet defaults to true for property 'RequiresFilter'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="RequiresFilter" Type="Edm.Boolean" DefaultValue="false">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:355 Property Warning: Unspecified Nullable facet defaults to true for property 'MaxLevels'. It is unusual for properties with default values to be nullable. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="MaxLevels" Type="Edm.Int32" DefaultValue="-1">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:408 Property Warning: Unspecified Nullable facet defaults to true for property 'Sortable'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Sortable" Type="Edm.Boolean" DefaultValue="true">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:426 Property Warning: Unspecified Nullable facet defaults to true for property 'Expandable'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Expandable" Type="Edm.Boolean" DefaultValue="true">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:432 Property Warning: Unspecified Nullable facet defaults to true for property 'MaxLevels'. It is unusual for properties with default values to be nullable. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="MaxLevels" Type="Edm.Int32" DefaultValue="-1">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:442 Property Warning: Unspecified Nullable facet defaults to true for property 'Searchable'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Searchable" Type="Edm.Boolean" DefaultValue="true">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:445 Property Warning: Unspecified Nullable facet defaults to true for property 'UnsupportedExpressions'. It is unusual for properties with default values to be nullable. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="UnsupportedExpressions" Type="Capabilities.SearchExpressions" DefaultValue="none">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:481 Property Warning: Unspecified Nullable facet defaults to true for property 'Insertable'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Insertable" Type="Edm.Boolean" DefaultValue="true">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:487 Property Warning: Unspecified Nullable facet defaults to true for property 'MaxLevels'. It is unusual for properties with default values to be nullable. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="MaxLevels" Type="Edm.Int32" DefaultValue="-1">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:498 Property Warning: Unspecified Nullable facet defaults to true for property 'Supported'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Supported" Type="Edm.Boolean" DefaultValue="true">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:501 Property Warning: Unspecified Nullable facet defaults to true for property 'ContentIDSupported'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="ContentIDSupported" Type="Edm.Boolean" DefaultValue="true">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:511 Property Warning: Unspecified Nullable facet defaults to true for property 'Updatable'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Updatable" Type="Edm.Boolean" DefaultValue="true">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:517 Property Warning: Unspecified Nullable facet defaults to true for property 'MaxLevels'. It is unusual for properties with default values to be nullable. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="MaxLevels" Type="Edm.Int32" DefaultValue="-1">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:527 Property Warning: Unspecified Nullable facet defaults to true for property 'Deletable'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Deletable" Type="Edm.Boolean" DefaultValue="true">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:533 Property Warning: Unspecified Nullable facet defaults to true for property 'MaxLevels'. It is unusual for properties with default values to be nullable. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="MaxLevels" Type="Edm.Int32" DefaultValue="-1">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:546 Property Warning: Unspecified Nullable facet defaults to true for property 'FilterFunctions'. It is unusual to for collection-typed properties to allow null items. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="FilterFunctions" Type="Collection(Edm.String)">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:559 Property Warning: Unspecified Nullable facet defaults to true for property 'TopSupported'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="TopSupported" Type="Core.Tag" DefaultValue="true">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:562 Property Warning: Unspecified Nullable facet defaults to true for property 'SkipSupported'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="SkipSupported" Type="Core.Tag" DefaultValue="true">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:565 Property Warning: Unspecified Nullable facet defaults to true for property 'Insertable'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Insertable" Type="Edm.Boolean" DefaultValue="true">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:568 Property Warning: Unspecified Nullable facet defaults to true for property 'Updatable'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Updatable" Type="Edm.Boolean" DefaultValue="true">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:571 Property Warning: Unspecified Nullable facet defaults to true for property 'Deletable'. It is unusual for boolean-typed properties to allow null values. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Deletable" Type="Edm.Boolean" DefaultValue="true">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:182 Property Warning: Unspecified Nullable facet defaults to true for property 'Id'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Id" Type="Edm.String">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:185 Property Warning: Unspecified Nullable facet defaults to true for property 'UrlTemplate'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="UrlTemplate" Type="Edm.String">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:232 Property Warning: Unspecified Nullable facet defaults to true for property 'Navigability'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Navigability" Type="Capabilities.NavigationType">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:240 Property Warning: Unspecified Nullable facet defaults to true for property 'NavigationProperty'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="NavigationProperty" Type="Edm.NavigationPropertyPath">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:243 Property Warning: Unspecified Nullable facet defaults to true for property 'Navigability'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Navigability" Type="Capabilities.NavigationType">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:250 Property Warning: Unspecified Nullable facet defaults to true for property 'FilterRestrictions'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="FilterRestrictions" Type="Capabilities.FilterRestrictionsType">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:253 Property Warning: Unspecified Nullable facet defaults to true for property 'SearchRestrictions'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="SearchRestrictions" Type="Capabilities.SearchRestrictionsType">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:256 Property Warning: Unspecified Nullable facet defaults to true for property 'SortRestrictions'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="SortRestrictions" Type="Capabilities.SortRestrictionsType">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:268 Property Warning: Unspecified Nullable facet defaults to true for property 'InsertRestrictions'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="InsertRestrictions" Type="Capabilities.InsertRestrictionsType">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:271 Property Warning: Unspecified Nullable facet defaults to true for property 'DeepInsertSupport'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="DeepInsertSupport" Type="Capabilities.DeepInsertSupportType">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:275 Property Warning: Unspecified Nullable facet defaults to true for property 'UpdateRestrictions'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="UpdateRestrictions" Type="Capabilities.UpdateRestrictionsType">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:278 Property Warning: Unspecified Nullable facet defaults to true for property 'DeleteRestrictions'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="DeleteRestrictions" Type="Capabilities.DeleteRestrictionsType">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:361 Property Warning: Unspecified Nullable facet defaults to true for property 'Property'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Property" Type="Edm.PropertyPath">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:364 Property Warning: Unspecified Nullable facet defaults to true for property 'AllowedExpressions'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="AllowedExpressions" Type="Capabilities.FilterExpressionType">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:543 Property Warning: Unspecified Nullable facet defaults to true for property 'CollectionProperty'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="CollectionProperty" Type="Edm.PropertyPath">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:550 Property Warning: Unspecified Nullable facet defaults to true for property 'FilterRestrictions'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="FilterRestrictions" Type="Capabilities.FilterRestrictionsType">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:553 Property Warning: Unspecified Nullable facet defaults to true for property 'SearchRestrictions'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="SearchRestrictions" Type="Capabilities.SearchRestrictionsType">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Capabilities.V1.xml:556 Property Warning: Unspecified Nullable facet defaults to true for property 'SortRestrictions'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="SortRestrictions" Type="Capabilities.SortRestrictionsType">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Core.V1.xml:86 Property Warning: Unspecified Nullable facet defaults to true for property 'Version'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Version" Type="Edm.String">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Core.V1.xml:89 Property Warning: Unspecified Nullable facet defaults to true for property 'Kind'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Kind" Type="Core.RevisionKind">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Core.V1.xml:92 Property Warning: Unspecified Nullable facet defaults to true for property 'Description'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Description" Type="Edm.String">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Core.V1.xml:344 Property Warning: Unspecified Nullable facet defaults to true for property 'Name'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Type="Edm.PropertyPath" Name="Name">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Core.V1.xml:348 Property Warning: Unspecified Nullable facet defaults to true for property 'Alias'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Type="Edm.String" Name="Alias">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Core.V1.xml:371 Property Warning: Unspecified Nullable facet defaults to true for property 'DefaultValue'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="DefaultValue" Type="Edm.String">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Validation.V1.xml:92 Property Warning: Unspecified Nullable facet defaults to true for property 'Value'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="Value" Type="Edm.PrimitiveType">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Validation.V1.xml:128 Property Warning: Unspecified Nullable facet defaults to true for property 'path'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="path" Type="Edm.NavigationPropertyPath">...

https://oasis-tcs.github.io/odata-vocabularies/vocabularies/Org.OData.Validation.V1.xml:131 Property Warning: Unspecified Nullable facet defaults to true for property 'target'. An explicit Nullable='true' facet is recommended when null property values should be permitted.
<Property Name="target" Type="Edm.NavigationPropertyPath">...