if err != nil {
		apiErr = toAPIError(ctx, err)
		argumentName = strings.ToLower(xhttp.AmzPartNumberMarker)
		valid = false
		return opts, valid
	}

	opts.ObjectAttributes = parseObjectAttributes(r.Header)
	if len(opts.ObjectAttributes) < 1 {
		apiErr = errorCodes.ToAPIErr(ErrInvalidAttributeName)
		argumentName = strings.ToLower(xhttp.AmzObjectAttributes)
		valid = false
		return opts, valid
	}