title: Create list item if not exists
body: <p>I have a system where I am tracking some transactions using SharePoint Online.
  I have a list where I am pulling all my transactions into.</p>
  
  <p>Form the transactions list, I want to populate two master lists using particular columns from the transactions list.</p>
  
  <ol>
  <li>Check if the entity in the transactions list is present in the master list; if not, insert it.</li>
  <li>Check if a combination of two columns in the transactions list is present in the master list; if not, insert it.</li>
  </ol>
  
  <p>Using Flow(Power automate), how can I check if an item exists in a list?</p>
  
  <p>I will be pulling transaction data using a scheduled flow. So my item copy flow should run after the first one has completed. I cannot have a trigger for item creation in the transactions list.</p>