You don't use the application number, you'll use the UCI that should be shown in the details of the PR application. UCI is assigned to a person, not an application so it will be the same for both PR and OWP, even though application numbers will be different. Log in to the linked PR application and check "show details" and you should see the UCI for the principal applicant.But I don't have the application ID for the OWP. I received only one application ID from CIC which is for the PR application. I just now tried to search for the OWP application using that application ID and it gave me an error saying the application ID is for the wrong category.
I then tried to search using the UCI and family name of my wife but still it said that no application could be found.
How do I search for the OWP application then?
If UCI isn't doing it you may need to keep waiting a while, since that should be what links it. Just make sure you're using the principal applicant's UCI and not the one that was included in AOR, which is the sponsor's UCI.