![DataWeave reduce function: How to loop through and transform an Array into a different type | MuleSoft Developers DataWeave reduce function: How to loop through and transform an Array into a different type | MuleSoft Developers](https://developer.mulesoft.com/content/media/tutorials/dataweave/dw-fun-reduce/image5.png)
DataWeave reduce function: How to loop through and transform an Array into a different type | MuleSoft Developers
![DataWeave reduce function: How to loop through and transform an Array into a different type | MuleSoft Developers DataWeave reduce function: How to loop through and transform an Array into a different type | MuleSoft Developers](https://developer.mulesoft.com/content/media/tutorials/dataweave/dw-fun-reduce/image4.png)
DataWeave reduce function: How to loop through and transform an Array into a different type | MuleSoft Developers
I am trying to Convert the EDI file in CSV but i am unable to access the nested list loop in Dataweave, I want to read the '010_PTD_Loop' and' 080_N1_Loop' in a
![DataWeave groupBy function: How to group items from Arrays, Strings, or Objects | MuleSoft Developers DataWeave groupBy function: How to group items from Arrays, Strings, or Objects | MuleSoft Developers](https://developer.mulesoft.com/content/media/tutorials/dataweave/dw-fun-groupby/image2.png)
DataWeave groupBy function: How to group items from Arrays, Strings, or Objects | MuleSoft Developers
![DataWeave reduce function: How to loop through and transform an Array into a different type | MuleSoft Developers DataWeave reduce function: How to loop through and transform an Array into a different type | MuleSoft Developers](https://developer.mulesoft.com/content/media/tutorials/dataweave/dw-fun-reduce/image2.png)