Edge BYOC Terraform Apply Fails on Edge Profile Resource

Applying genesyscloud_edge_profile resource fails with HTTP 400 Bad Request. Provider v1.15.4. Environment is AP-1 BYOC.

resource “genesyscloud_edge_profile” “main” {
name = “Sydney Edge”
edge_id = “${genesyscloud_edge.main.id}”
}

Error response indicates invalid region mapping. Has anyone seen this with latest provider?