E05011 — DomainHostnameReserved
This hostname is already in use as a return-path or tracking domain. Remove that configuration first, or choose a different domain.
- HTTP status: 409
- Type: conflict_error
- Name: DomainHostnameReserved
What to do
Remove the return-path or tracking configuration that uses this hostname, or choose a different domain, then retry.
Operations that resolve this:
Related
- Idempotency: safe retries and key reuse rules
- E05xxx — Domains & DNS: every code in this range
- Errors: the full wire contract, status mapping, and error catalog
- Error handling: branching on type and code, validation details, and vendor_code