Hi @tuliovargas, from looking at your workflow it’s unfortunately not totally clear to me what you want to achieve here. Are you trying to make HTTP Requests for each of the postal codes from your list ['LA96RA','DA145DL','PH263AE','BH118QX','IG80SU','BD108LZ','TA116LA','GL538AN','TS69DQ','GU342DS']? This would not require building a loop manually as the HTTP Request node would run once for each incoming item by default. This is the default behaviour for most nodes, exceptions are listed here in the docs.
So a simple way of making an API request for each of these postal codes would be to spread them into single items and then just follow up with the HTTP Request node.
Example Workflow
This would then return individual items for each postal code you pass on:
