Update SMS routing data

Updates the specified SMS routing data. Will only update data if the requested SMS routing entry belongs to the logged in organisation. <br> The following properties may be set in the JSON body: * `operator` - the operator that will be routed via this entry * `smpp_bind` - the SMPP bind used for the route * `gt_config` - can only be updated by Master organisation, MNOs get default NULL * `msisdn_pool` - can only be updated by Master organisation, MNOs get default NULL * `country` - the country that will be routed via this entry * `sccp_called_party_prefix` - can only be updated by Master organisation, MNOs get default NULL **Notes:** * Either a `gt_config` OR an `smpp_bind` needs to be set. It is not possible to set both. * Either a `country` OR an `operator` needs to be set. It is not possible to set both. * If the `country` is set, the `operator` will be automatically set to `ANY`. * If the `operator` is set, the `country` will be automatically set to the operator's country.