ocket8888 opened a new issue, #6791:
URL: https://github.com/apache/trafficcontrol/issues/6791
## This Improvement request (usability, performance, tech debt, etc.)
affects these Traffic Control components:
- Traffic Ops
## Current behavior:
When creating a Topology where one or more nodes is missing the required
`cachegroup` property, the error alert in the response will say
> ```
"'cachegroup not found' node 0 references nonexistent cachegroup ",
```
indicating that it's treating the missing property as though it had been
provided with the value of the empty string. I discovered that by attempting to
guess the structure of the request by using the `name` property to try to name
the Cache Group of a node like
```json
{
"name": "dev",
"nodes": [
{
"name": "dev"
}
}
```
so it was a little confusing that it appeared to be telling me that the
"dev" Cache Group doesn't exist - but it definitely does.
Also, trying to create a Topology without specifying any nodes e.g. `topost
-kp topologies '{"name": "dev"}'` returns an error-level alert with the text:
> ```
"'length' must provide 1 or more node, 0 found",
```
which seems to be saying I specified an invalid `length` property.
## New behavior:
When a property that is required is missing from a request, the resulting
error-level alert should clearly state so in a format like
> ```
missing required property 'PROPERTY NAME'
```
or similar.
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