There is a problem:
When I logging as a supplier in Axelor, I can see other suppliers requests in Supplier portal. Here are the steps:
I think it’s a permissions issue? But I did everything as @PakMax told me. He is a guru, so it turns out that I discovered something unnecessary, or what could be the problem?
By the way, none of the items on the main screen of the Supplier Portal leads to requests from the client. Maybe there is an easier way to get requests than I found?