The company is set up read-only: Twinn reads its data and never changes it, so every write is refused. 403, not retryable. Nothing was executed. Making the company writable is done where the Twinn agent is set up, by whoever administers the company's database.
OPDC API error code
COMPANY_READ_ONLY
HTTP status 403
The API answers with a problem document (RFC 9457) whose type is https://twinn.engineering/errors/company-read-only, and with X-Error-Code: COMPANY_READ_ONLY. Branch on the code, never on the detail text.