User is going to the inventory tab and then creating a new child resource.
After the wizard has closed, a green bar shows up saying "request xyz successfully submitted".

One one side this is misleading as many users think, this means creation was successful.
On the other hand, the user needs to either click refresh several times to see the new resource
or click on child history to see if creation was successful or not.

Perhaps it is possible to "poll" the state and switch to the history tab if creation was a failure.
Always switching may be too much, as people may want to click on the freshly created resource in the child tab and switch to it. Otoh, the history tab could just also contain the link to the new resource if the create result was a success