This n8n workflow demonstrates how to utilize the `itemMatching(itemIndex)` method within a Code node to fetch linked data from previous workflow steps. It starts with a Manual Trigger, then retrieves all customer records from a datastore, and uses a Python Code node to associate email addresses with each customer entry via item matching. The workflow can be used in scenarios where linked data needs to be dynamically accessed and manipulated across multiple steps, such as customer data enrichment or data validation. Practical applications include customer management, data reconciliation, and automation of linked information retrieval.