Hi @david.yano

Basically, you can migrate the application from the TibMsg-MD Interface to the OMM connection via the following tasks

1. re-write the application to use the RFA Java OMM interface (the OMM interface is not compatible with the MarketData and TibMsg interfaces)
2. create new RFA Java configuration connection node for the RSSL connection (or re-configure)
3. Configure the ADS server to enable the RSSL connection
4. If you are using Java 1.6 or below, you need to upgrade to Java 1.7 or 1.8 as well

RFA Java Configurations

You need to re-configure (or create new) RFA configuration connection node to use the RSSL connection instead. Please check the section 3.2.1 RSSL Connection of the RFAJ_ConfigLoggingGuide.pdf document in the RFA Java package for more detail.

Please see a brief comparison between the SSL and RSSL configurations based on your SSL configurations below:

<node name="Connections">
    <map/>
        <node name="quantis-us-dev">
        <map>
            <entry key="connectionType" value="SSL"/>
            <entry key="serverType" value="sapi"/>
            <entry key="serverList" value="ads1-qa.ny.rbcds.com ads2-qa.ny.rbcds.com"/>
            <entry key="portNumber" value="8101"/>
            <entry key="userName" value="_quantis"/>
            <entry key="downloadDataDict" value="true"/>
            <entry key="downloadFullMarketFeedDataDict" value="true"/>
            <entry key="logEnabled" value="true"/>
            <entry key="dacs_CbeEnabled" value="false"/>
            <entry key="dacs_SbePubEnabled" value="false"/>
            <entry key="dacs_SbeSubEnabled" value="false"/>
        </map>
</node>

RSSL:

<node name="Connections">
    <map/>
        <node name="quantis-us-dev">
        <map>
            <entry key="connectionType" value="RSSL"/>
            <entry key="serverList" value="ads1-qa.ny.rbcds.com ads2-qa.ny.rbcds.com"/>
            <entry key="portNumber" value="{RSSL Port}"/>
    </map>
</node>

The above configurations show that:

• The RSSL connection requires the “connectionType” as “RSSL”
• The “portNumber” must points to the ADS RSSL Port (default port is 14002)
• All dictionary configurations are removed,now they are programmatically in the code (send Dictionary request message to ADS or populate from local files)
• The “username” parameter is removed, now it is programmatically set in the code (via a login message)

Resources and Examples:

There are the following OMM application migration resources, example code and guidance for developers:

1. The API migration guide document is available at the <RFA Package>\Docs\portal\api_migration.htm file in the RFA Java package
2. The RFA Java Tutorial that provides a step by step, video tutorial and source code to create the RFA Java OMM consumer application for you
3. The RFA Java Quick Start tutorial
4. I suggest you check the RFA Java StarterConsumer example which provides sample code that subscribes data to the ADS server with the OMM interface for developers. The StarterConsumer exmaple is available at <RFA Java package>\Examples\com\reuters\rfa\example\omm\cons folder. You can compare it with the MDSubDemo (<RFA Java package>\Legacy\Examples\com\reuters\rfa\legacyexample\session\mdsub) to see different between the OMM and MD interfaces application

Please be informed that the RFA API is a feature-completed API (non-strategic). You may consider the Elektron Message API – Java edition (EMA Java API) which is a part of the strategic Elektron SDK family.

EMA Java

The Elektron SDK Family (C++ and Java Editions) is a suite of modern and open APIs that aim to simplify development through a strong focus on ease of use and standardized access to a broad set of Thomson Reuters and proprietary content and services.

The Elektron SDK stack contains a set of capabilities ranging from low level ‘Transport’ interfaces to very high level content aware stateful interfaces. The SDK consists of two following APIs

1. Eletrkon Transport API (ETA): Formerly known as UPA, or Ultra Performance API, this API provides access at the transport layer for Thomson Reuters Elektron Feeds and Thomson Reuters Enterprise Platform (TREP). This API provides the highest level of performance, scalability and tune-ability.
2. Elektron Message API (EMA): The Elektron Message API is a data-neutral, multi-threaded, ease-of-use API providing access to OMM and RWF data. As part of the Elektron Software Development Kit, or Elektron SDK, the Elektron Message API allows applications to consume and provide OMM data at the message level of the API stack.

Please note that the EMA API is built on top of ETA API. Both of them connect and consume data from TREP/Elektron via RSSL connection.

The Elektron SDK Family (C++ and Java editions) already supports MiFID II.

You can find more detail regarding the EMA Java from the following resources

• Elektron SDK Family site (https://developers.refinitiv.com/en/elektron)
• Elektron SDK – Java site (https://developers.refinitiv.com/en/api-catalog/refinitiv-real-time-opnsrc/rt-sdk-java)
• Developer Webinar: Introduction to Enterprise App Creation With Open-Source Elektron Message API (https://www.youtube.com/watch?v=2pyhYmgHxlU)
• Developer Webinar Recording: Why migrate from RFA to EMA API? (https://www.youtube.com/watch?v=CJihZV4m0rw)
• Elektron Message API Java Quick Start (https://developers.refinitiv.com/en/api-catalog/refinitiv-real-time-opnsrc/rt-sdk-java/quick-start)

To migrate to OMM, your application also has to migrate from "SSL" to "RSSL" connectionType. This require code changes.

I would recommend reading this tutorial on how to make a subscription to level1 data.

Or alternatively, migrate to EMA API, please see this tutorial and this video.