I have requirement PUB/SUB architecture using Azure event grid domain topics. To implement that, I have created a publisher logic-app1-pub, with HTTP trigger request, receives payload data and publish to a domain topic, up to here works fine.

In the event grid domain topic I need to subscribe. For that I need to created another logic-app2-sub with http trigger request or event receiver to subscribe domain topic message. need help on this. I am using when a event receives connecter, when I create subscription, after updating updating logic app url in the subscription I am getting below exceptions

if I select custom domain schema option

if I select Event Domain Schema, getting the similar error if I select the last option cloud event schema, same exception

I suspect some thing wrong in the schema in the event receiver connecter in logic-app2-sub. am I missing something?

all logic apps are consumption plan multitenant

I trying achieve a flow - content update flow in cosmos db, involves an API backend as a logic app, this logic is a publisher to even domain topics - another logic app as a subscriber which has a event receiver connecter, once an event massage received, the logic will update database some file status