According to the comment at JBEAP-25800 config-properties cannot be added via cli (while according to documentation it should be possible) ...

/subsystem=resource-adapters/resource-adapter=helloWorld:add(archive=jca.rar,config-properties= ( I am not sure which this is )

/subsystem=resource-adapters/resource-adapter=helloWorld/config-properties= (child)
/subsystem=resource-adapters/resource-adapter=helloWorld:write-attribute(name=config-properties (attribute)

I could not find what the attribute wants for a value, it kept giving me errors, if there is no way to set the value of the attribute without an error, then there would be no issue.

Update: it looks like as is the attribute is not usable and throws an error, so changing this would not break any one that is running the commands with the attribute, as it would still be an error.