How to convert Pipe delimited text file into CSV in Mule 4

Hi @rpedada
You can do so by adding the this configurations to your file Read connector:

Processing your payload with the following dataweave:

 %dw 2.0
 output application/csv separator=','
 ---
 
 payload

And using a file write adapter to output it.
You can find more info here: https://docs.mulesoft.com/mule-runtime/4.1/dataweave-formats#format_csv
Regards, Ariel