Trying to push a new contact list via the Genesys Cloud API. The endpoint is POST /api/v2/outbound/contactlists. Getting a 400 INVALID_VALUE error. The payload is minimal. Just name and column definitions. Here is the JSON body.
{
"name": "Test List",
"columns": [
{
"name": "phone",
"type": "phone"
}
]
}
The error message is vague. It just says invalid value. Not sure which field is triggering it. The docs don’t list required fields beyond name. Checking the response headers too. No help there. What am I missing?