Power Platform Community Forum Thread Details

I have a flow that reads items from an Excel file, then pushes them to a SharePoint list. In some cases, new items are added (creating a new SharePoint ID), but in other cases, I want to update a batch of records that already exist in the SharePoint list. The Excel file (source for the updates) does not contain the SharePoint ID. However, the SharePoint list has other columns that are unique and could be used to look up a unique SharePoint ID. I would like to use Compose or another method to make sure that within a loop, when using the Update Item action, I am updating the correct item.