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Differences Between S3 and Swarm's Implementation of Object Locking
In S3, a DELETE request results in a delete marker, shadowing the locked object version. Swarm's implementation deviates from that logic – it rejects any DELETE requests for indelible objects with an HTTP 403 Forbidden error.
When Gateway gets a HTTP 403 Forbidden error from Swarm, it checks if the object is locked. Gateway simulates the S3 behavior creating a new (unlocked) object version, immediately followed by a DELETE, thus creating a delete marker.
For SCSP, use a configuration flag to pick the desired behavior:
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SCSP APPEND does create a new version when versioning is enabled; it does not allow an object's metadata to be modified. So for instance, the The "retain-until" header value could can not be changed on an APPEND. Gateway does not impose any restrictions on the use of APPEND in combination with object locking.
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