I created a list and used the "build a flow" option from that list. I did that because it gave the trigger option of "When an item in this list is modified", which is not normally an option as a trigger when you build a flow from scratch.
Basically I need my flow to trigger from a modified item, get the item and then update the same item that is in another sharepoint list. I essentially have two separate sharepoint lists that compile into a single other list (master list). When something is deleted from one of the single lists, it needs to then delete from the master list. I planned to do this in two separate flows, as the "modified" trigger will need to be triggered independently from the two lists in order to delete it from the master.
The problem is that I am getting a 502 error on the "Update" action during this flow. I have tried refreshing connections, rebuilding and exiting the browser and nothing seems to fix this.