if err := enforceRetentionBypassForPut(ctx, r, *oi, objRetention, reqInfo.Cred, reqInfo.Owner); err != nil {
				return dsc, err
			}
			if objRetention.Mode.Valid() {
				oi.UserDefined[strings.ToLower(xhttp.AmzObjectLockMode)] = string(objRetention.Mode)
				oi.UserDefined[strings.ToLower(xhttp.AmzObjectLockRetainUntilDate)] = amztime.ISO8601Format(objRetention.RetainUntilDate.UTC())
			} else {