Basic script structure

The basic script structure only contains the pure validation logic in a rule. More information: Validation logic.

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rule {

}  

The following script checks that the asset name is not empty and contains more than two characters.

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rule {
	isNotEmpty(attributes.'Definition', message: "Definition cannot be empty") && 
	isLengthMore(attributes.'Definition'?.first(), 20, message: "Description should have more than 20 characters")
}