After you create a workflow, you must define the global attributes, input parameters, and output parameters of the workflow.

Workflow attributes store data that workflows process internally. Workflow input parameters are data provided by an outside source, such as a user or another workflow. Workflow output parameters are data that the workflow delivers when it finishes its run.

You can use input and output parameters to pass data into and out of the workflow.

Workflow attributes are the data that workflows process.

You can use OGNL expressions to determine input parameters dynamically when a workflow runs. The Orchestrator OGNL parser uses certain keywords during OGNL processing that you cannot use in workflow attribute or parameter names.