Message in Arabic (العربية)![](/img/flags/ar.png)
An XmlnsDefinitionAttribute in assembly '<var>Assembly Name </var>' is missing a required property. Set both the ClrNamespace and XmlNamespace properties, or remove the XmlnsDefinitionAttribute.
Unlocalized message![](/img/flags/en.png)
An XmlnsDefinitionAttribute in assembly '<var>Assembly Name </var>' is missing a required property. Set both the ClrNamespace and XmlNamespace properties, or remove the XmlnsDefinitionAttribute.
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