Introduction

Directive Sets are a way of providing a simple and secure way to drive issue changes from links in generated email notifications to achieve anything from simple custom field value changes, to more complex workflow.  The links generated only have a security token, no arguments are supported, meaning that the links can only be used for exactly the purpose intended, one link per action.  An Email can have many such links covering a variety of field values or actions.  Here is a high level overview of the flow, showing the following flow:

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