This is against:
https://git.opendaylight.org/gerrit/#/c/3314/10 (controller side)

https://git.opendaylight.org/gerrit/#/c/3451/2 (openflowplugin side)

Build the controller
Build openflowplugin using -nsu

Run distribution/base/target/../run.sh -debug

From POSTMAN:

PUT: http://192.168.195.157:8080/restconf/config/opendaylight-inventory:nodes/node/openflow:1/table/2/flow/123

Content-Type: application/xml

Accept: application/xml

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<flow xmlns="urn:opendaylight:flow:inventory">
<strict>false</strict>
<instructions>
<instruction>
<apply-actions>
<action>
<dec-nw-ttl/>
</action>
</apply-actions>
</instruction>
</instructions>
<table_id>2</table_id>
<id>123</id>
<cookie_mask>10</cookie_mask>
<out_port>10</out_port>
<installHw>false</installHw>
<out_group>2</out_group>
<match>
<ethernet-match>
<ethernet-type>
<type>2048</type>
</ethernet-type>
</ethernet-match>
<ipv4-destination>10.0.0.1/24</ipv4-destination>
</match>
<hard-timeout>12</hard-timeout>
<cookie>10</cookie>
<idle-timeout>34</idle-timeout>
<flow-name>FooXf1</flow-name>
<priority>2</priority>
<barrier>false</barrier>
</flow>

When I place a breakpoint in FlowTransaction.java function addFlow
what arrives there is:

Flow [_id=null, _key=FlowKey [_id=null], _barrier=false, _bufferId=null, _containerName=null, _cookieMask=10, _flags=null, _flowName=FooXf1, _installHw=false, _instructions=Instructions [_instruction=[Instruction [_order=null, _key=InstructionKey [_order=null], _instruction=null]]], _match=Match [_ethernetMatch=EthernetMatch [_ethernetDestination=null, _ethernetSource=null, _ethernetType=EthernetType [_type=null, _mask=null]], _icmpv4Match=null, _icmpv6Match=null, _inPhyPort=null, _inPort=null, _ipMatch=null, _layer3Match=null, _layer4Match=null, _metadata=null, _protocolMatchFields=null, _tunnel=null, _vlanMatch=null], _outGroup=2, _outPort=10, _strict=false, _cookie=10, _hardTimeout=12, _idleTimeout=34, _priority=2, _tableId=2]

Note: Flow [_id=null,
That's wrong, as it is provided
3:07 AM
And Match [_ethernetMatch=EthernetMatch [_ethernetDestination=null, _ethernetSource=null, _ethernetType=EthernetType [_type=null, _mask=null]]
And etherType was provided
And
EthernetType [_type=null,
Should not be null

Please also note: this flow was captured from running

mdAddFlow openflow:1 f1

successfully at the commandline... so it was the result of reading a valid Flow that had travered the FlowTransaction and gotten to the switch.