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Overall, it makes sense to use unique names for any user defined variable to avoid confusion.
Project, Target, and Instance Properties
Scope is entire workflow execution.
Ideally you should not modify these properties during workflow execution, but they can be modified to influence execution if necessary. The value will remain modified during the workflow execution.
FlexFields
Scope of FlexField value is entire workflow execution, which may be build/deploy/utility.
Note that build request FlexFields are associated with Project Version created by build, hence those values are available during deploy execution as well for project version.
Do not modify during course of workflow execution.
Workflow Inputs
Scope is entire workflow execution.
Do not modify during course of workflow execution.
Workflow Variables
Scope is entire workflow execution.
You can modify value for variables during workflow execution and use it to pass various values to plugin inputs or capture plugin outputs.
Plugin Inputs
Scope is specific plugin execution for endpoint.
User-defined Plugin Inputs and Outputs
Scope is specific plugin execution for endpoint.
Use unique names for Workflow Inputs, Variables and any user-defined Plugin Inputs and Outputs to avoid any confusion.
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