ListB connected to ListA with Lookup Column. How to Update ListA

[schuess]

I want to update an item in ListA when an Item in ListB is created. The link is a lookup column from ListB to ListA. Is this possible? Do you know how I might do it? I can’t seem to figure it out. Thanks

[v-monli-msft]

Hi schuess,

The lookup relationship between A and B cannot be recognized by Flow, but I think you could try something like below:

But since the ID might not match in the update item action, I'm not sure that this could work.

Please have a try and if this do not work, I will try some other way.

Regards,

Mona