Creating a step where a supervisor manually assigns an operator to another workflow step.
Hints on transporting workflows.
Hints on keeping the HR model synchronized between systems.
Troubleshooting when the workflow does not start.
Sending e-mails from the workflow.
Different mechanisms for accessing work items.
When to use asynchronous tasks.
Ensuring that your workflow is robust.
Documentation issues.
Useful Online Service Notes.

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Frequently Asked Questions about SAP's WebFlow Engine
FAQ Workflow Techniques
Tips 'n Tricks for Consultants
Off The Top of my Head
WebFlow Links