Policy Xpress has variables that are set with actions and saved as data elements (Variables category). Variables are shared across all policies that run at the same time, so a variable that has been set can be used by other policies of lower priority.
For example, a variable can contain a value calculated once by a policy, and then shared across other policies that no longer need to recalculate the value. The initial policy sets a value to the variable, and policies that run later read that value by using a data element that has the variable name as a parameter.
A variable can also be a trigger for other policies. In this case, the policies only run if the policy before them has run.
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