Hello,

Yes, the module.properties file if you're building from source or the module.xml file under the /config directory of the specific module can dictate whether a module is meant for a specific build of LabKey.

https://www.labkey.org/Documentation/wiki-page.view?name=includeModulePropertiesFile

So if the requiredServerVersion field is set to say, 16.3, then that means when the server attempts to load that module, it will immediately recognize that it needs 16.3 or greater and will not allow the module to work otherwise.

Regards,

Jon