<ul class="contains-task-list">
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> I have searched the <a href="https://github.com/apache/incubator-dubbo/issues">issues</a> of this repository and believe that this is not a duplicate.</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> I have checked the <a href="https://github.com/apache/incubator-dubbo/blob/master/FAQ.md">FAQ</a> of this repository and believe that this is not a duplicate.</li>
</ul>
<h3 dir="auto">Environment</h3>
<ul dir="auto">
<li>Dubbo version: 2.5.10</li>
<li>Operating System version: win7</li>
<li>Java version: 1.8</li>
</ul>
<h3 dir="auto">Steps to reproduce this issue</h3>
<ol dir="auto">
<li><a class="user-mention notranslate" data-hovercard-type="user" data-hovercard-url="/users/configuration/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/configuration">@configuration</a> to construct three protocol  use "dubbo", "rmi","coustom"</li>
<li>use <a class="user-mention notranslate" data-hovercard-type="user" data-hovercard-url="/users/service/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/service">@service</a> to define a serviceImpl and set protocol={"dubbo"}</li>
<li>this service register for 3 times. it is different when use xml.</li>
</ol>
<p dir="auto">Pls. provide [GitHub address] to reproduce this issue.</p>
<h3 dir="auto">only dubbo protocol will effective</h3>
<p dir="auto">What do you expected from the above steps？</p>
<h3 dir="auto">actual three protocol effective</h3>
<p dir="auto">What actually happens?</p>
<p dir="auto">If there is an exception, please attach the exception trace:</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="Just put your stack trace here!"><pre class="notranslate"><code class="notranslate">Just put your stack trace here!
</code></pre></div>
<p dir="auto">现在的版本能支持服务跨组调用吗？（2.6.0上试过不行）</p>
<ul dir="auto">
<li>provider group A<br>
<code class="notranslate">&lt;dubbo:registry protocol="zookeeper" address="192.168.50.130:2181" check="false" group="A"/&gt; &lt;dubbo:service interface="com.alibaba.dubbo.demo.DemoService" ref="demoService"/&gt;</code></li>
<li>consumer group B<br>
<code class="notranslate">&lt;dubbo:registry protocol="zookeeper" address="192.168.50.130:2181" check="false" group="B"/&gt; &lt;dubbo:reference id="demoService" check="false" interface="com.alibaba.dubbo.demo.DemoService" group="A"/&gt;</code></li>
</ul>