404
merchants.not_foundmerchantsNo merchant profile for this tenant
Returned by the implementation; no specification rule declares it yet.
The tenant exists but has no merchant profile yet — the record is created during onboarding, not at signup.
Why the API refuses
no merchant profile for this tenant
What to do
Create the profile before reading it. A newly provisioned tenant answering 404 here is the expected state, so treat it as "not onboarded yet" in your UI rather than as an error.