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nvm, think i figured it out…
```new aws.iot.TopicRule('this_is_not_the_name', {...})```
isn’t the same as
```new aws.iot.TopicRule('this_is_not_the_name', {
    name: 'this_is_the_name',
    ...
})```
which has a required `name` in `TopicRule` that i was missing…

Yeh, pulumi will add a unique suffix to names unless you override (not sure if thats true in all cases). But that suffix is alwasys `-xxxxx` where `xxxxx` is some hex numbers &amp; letters. I think the hyphen (`-` ) used was the problem.

right, i just passed the `-` through a regex to replace globally to `_`