Script resource 422 error on Terraform apply

Need some help troubleshooting script deployment. Provider v1.65.2 returns 422 when applying the following payload. Environment is Australia/Sydney. Terraform v1.9.8.

{
 "name": "test-script",
 "language": "en-AU",
 "sections": [
 {
 "name": "intro",
 "items": [
 {
 "type": "text",
 "value": "hello"
 }
 ]
 }
 ]
}