new rpc call update-table stuck

using postman (credentials admin:admin)

POST /restconf/operations/sal-table:update-table

<input xmlns="urn:opendaylight:table:service">
<node xmlns:inv="urn:opendaylight:inventory">/inv:nodes/inv:node[inv:id="openflow:1"]</node>
<updated-table>
<table-features> <!-- model opendaylight-table-types, grouping table-features -->
<table-id>0</table-id>
<name>table 0 - dummy name</name>
<metadata-match>21</metadata-match>
<metadata-write>22</metadata-write>
<max-entries>55</max-entries>
<config>DEPRECATED-MASK</config>
</table-features>
</updated-table>
</input>

nothing is returned and postman is stuck