OTM Order release DSU Issue

Scenario

In Order Release, I have two different types of orders:

Order1 (arrives first):

Fields → Container No, Liner Name, Container Type

Order2 (arrives later):

Fields → Booking No, Liner Name, Container Type

Requirement

When I run an action on Order2:

If Liner Name and Container Type of Order1 = Order2, then:

Copy Container No from Order1 → Order2

Copy Booking No from Order2 → Order1

Issue

The action works, but if there are multiple Order2s with the same Liner Name and Container Type,

The same Container No from Order1 gets copied into all those Order2s, which is incorrect.

I want it to only update the Container No uniquely of all possible matches.