JBoss.orgCommunity Documentation
Containers configuration files must comply with the kernel configuration grammar. Thus, all configurations will contain an XSD declaration like this:
<configuration xmlns="http://www.exoplatform.org/xml/ns/kernel_1_1.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.exoplatform.org/xml/ns/kernel_1_1.xsd http://www.exoplatform.org/xml/ns/kernel_1_1.xsd">
</configuration>
The kernel_1_1.xsd file mentioned in the example above can be found inside exo.kernel.container-x.y.z.jar!org/exoplatform/container/configuration/
along with other versions.