[RemoteClass(alias... wrong belief

Are You know that [RemoteClass] metadata tag is equal to registerClassAlias() function. So we don't need duplicate registration operation.

package com.os.core{

    [RemoteClass(alias="com.os.core.shData")]
    public class shData
...
}

is the same as

registerClassAlias(getQualifiedClassName(shData), shData);

or

registerClassAlias("com.os.core::shData", shData);