update item - without matching ID's - Sharepoint List

[Anonymous]

I have 2 sharepoint lists, 

List A - EWO App

List B - EWO for maintenance

The flow I have is below:

The Goal is: 

When a list item is modified in List A, update that Item in List B

The flow works fine when I have the ID field set to ID, but the problem is that the list ID's are not the same between both lists (List B has a lot more items) so I am looking for another solution to use in the ID field. I have tried using title since the titles are unique but the flow keeps failing. 

any ideas?

[PrasadAthalye]

Are you trying a kind of parent Chile relationship? In the 2nd list, add a lookup from 1st and call it EWOApp id. Then make sure to select when you create record in maintenance.

Now in the flow, update record where EWOApp_ID = ID from the first list. That way you find exact match.

Like and Mark this as an answer if this solves your problem

[Anonymous · Accepted solution]

Thanks @PrasadAthalye I ended up doing something similar but I could not get the lookup column to work. 

I created a column in LIST B and in my create flow I set this columns value to the ID of the item from LIST A 

EX -

LIST A ID = 19, when an Item in created LIST B ID = 3599 and AID = 19 

then on my modify item flow I added 'Get Items' and under advanced options/filter query I set AID equal to the ID of list A and set the count to 1. 

I had some errors here so I had to remove the filter query and run the get items and check the results, AID was not the true name of the column it turned out to be UniqueID0 so I had to set my filter query to "UniqueID0 eq ID"

after Get items I added the update item property to flow and filled in the fields normally. 

Worth nothing I had to make sure under update items I had to make sure AID had the ID field for List A again and not List B.