Gc-analytics-reporting cli 400 on custom report definition

General Discussion
1

looking for advice on why my custom analytics report definition fails via cli.

using gc-cli v1.28.0
region: au-1
command: genesys cloud analytics reporting definition create --file report.json

response:

HTTP 400 Bad Request
{
 "errors": [
 {
 "code": "INVALID_INPUT",
 "message": "Invalid field: 'metrics'. Expected array of objects with 'id' and 'name'.",
 "path": "$[0].metrics"
 }
 ]
}

the json validates against the openapi spec locally. the metric id conversation_duration exists in the org. tried hardcoding the id from a known working report. same error.

snippet from report.json:

{
 "name": "test_report",
 "type": "custom",
 "metrics": [
 {
 "id": "conversation_duration",
 "name": "Conv Duration"
 }
 ]
}

terraform provider v1.65.2 also fails with same 400 on apply. seems like a backend validation issue or api change in au-1. anyone else hit this?