Different Owner: Always fails with 409 BucketAlreadyExists
Checks the s3-identity-id header against the stored bucket owner
Returns error immediately if owners don't match
Same Owner + Conflicting Settings: Fails with 409 BucketAlreadyExists
Compares requested Object Lock settings with existing bucket configuration
Returns error if settings are incompatible (e.g., trying to enable Object Lock on a bucket that doesn't have it)
Same Owner + Compatible Settings: Returns 200 OK (idempotent)
If the bucket already exists with the same owner and compatible settings
Returns success response without recreating the bucket
chrislu
b0392731b7