Explain the use of the For Each scope in Mule 4.

• A. Processes a collection element-by-element; supports emitting multiple messages or aggregating results.
• B. Splits a message into multiple parallel branches.
• C. Filters messages based on content.
• D. Merges multiple messages into one.

Answer: (A)

For Each processes a collection element-by-element within a flow. It takes a payload that is a collection and runs the inner processing for each item, letting you apply per-item logic like enrichment, validation, or calling an external service for every element. If you want to produce a separate outbound message for every item, you can design the inner flow to emit a message per iteration. If you prefer a single consolidated result, you can accumulate each item’s result in a variable during the loop and then set the final payload after the loop completes to return a combined list or object. This scope is about iterating through items and performing consistent processing on each one, rather than splitting, filtering, or merging messages, which are handled by other features in Mule 4.