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• Order variables are declared by specifying a name and data type.
  • If no default value is added then the order variable is mandatory, i.e. any orders have to specify a value for the variable.
  • If a default value is added then the order variable is optional, i.e. orders can specify a value and otherwise the default value is used.
  • If a default value is added then the final data type can be added that prevents the variable from being modified later on in the workflow.
  • Default values accept constant values and JS7 - Expressions for Variables.
• Any number of order variables can be declared.

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