You can make use of the
configSource attribute which allows you to reference a config file for a specific configuration section. For example, if you stored your validation rules in a separate config file named
validation.config, you can reference it from the default config file of your application thru:
<validation configSource="validation.config" />
Note that the you can only specify a relative path in the configSource attribute.
If this won't be enough for the scenario you're trying to achieve, check out this
topic from the documentation?
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