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    <title>topic Problem in Refresh ALV Tree... in Application Development and Automation Discussions</title>
    <link>https://community.sap.com/t5/application-development-and-automation-discussions/problem-in-refresh-alv-tree/m-p/8784750#M1678602</link>
    <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Hello Friends,&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Right now i'm dealing with ALV Tree.&lt;/P&gt;&lt;P&gt;My Problem is,&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;When I Execute my program first time It run properlly,&lt;/P&gt;&lt;P&gt;but when I execute it next time with differnt set of INPUT,&lt;/P&gt;&lt;P&gt;It throws an DUMP i.e. &lt;EM&gt;"Field symbol has not yet been assigned."&lt;/EM&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Here is the reason:&lt;/P&gt;&lt;P&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;STRONG&gt;"IS_OUTTAB_LINE" &lt;/STRONG&gt;this structure always contains data of previous set of INPUT (not current).&lt;/P&gt;&lt;P&gt;&amp;amp; I can not manually clear this sructure coz it is inside the built in method "set_hierarchy_data".&lt;/P&gt;&lt;P&gt;&lt;STRONG&gt;(It means this structure didn't capture Current ITAB's Line type)&lt;/STRONG&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;So, what should I do to make refresh or Clear this structure. &lt;SPAN __jive_emoticon_name="confused" __jive_macro_name="emoticon" class="jive_macro jive_macro_emoticon jive_emote" src="https://community.sap.com/777/images/emoticons/confused.gif"&gt;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Thanks in Advance.....&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Regards, &lt;SPAN __jive_emoticon_name="cry" __jive_macro_name="emoticon" class="jive_macro jive_macro_emoticon jive_emote" src="https://community.sap.com/777/images/emoticons/cry.gif"&gt;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;KEYUR PAWAR.&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
    <pubDate>Sat, 02 Jun 2012 10:07:43 GMT</pubDate>
    <dc:creator>keyur_pawar</dc:creator>
    <dc:date>2012-06-02T10:07:43Z</dc:date>
    <item>
      <title>Problem in Refresh ALV Tree...</title>
      <link>https://community.sap.com/t5/application-development-and-automation-discussions/problem-in-refresh-alv-tree/m-p/8784750#M1678602</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Hello Friends,&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Right now i'm dealing with ALV Tree.&lt;/P&gt;&lt;P&gt;My Problem is,&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;When I Execute my program first time It run properlly,&lt;/P&gt;&lt;P&gt;but when I execute it next time with differnt set of INPUT,&lt;/P&gt;&lt;P&gt;It throws an DUMP i.e. &lt;EM&gt;"Field symbol has not yet been assigned."&lt;/EM&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Here is the reason:&lt;/P&gt;&lt;P&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;STRONG&gt;"IS_OUTTAB_LINE" &lt;/STRONG&gt;this structure always contains data of previous set of INPUT (not current).&lt;/P&gt;&lt;P&gt;&amp;amp; I can not manually clear this sructure coz it is inside the built in method "set_hierarchy_data".&lt;/P&gt;&lt;P&gt;&lt;STRONG&gt;(It means this structure didn't capture Current ITAB's Line type)&lt;/STRONG&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;So, what should I do to make refresh or Clear this structure. &lt;SPAN __jive_emoticon_name="confused" __jive_macro_name="emoticon" class="jive_macro jive_macro_emoticon jive_emote" src="https://community.sap.com/777/images/emoticons/confused.gif"&gt;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Thanks in Advance.....&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Regards, &lt;SPAN __jive_emoticon_name="cry" __jive_macro_name="emoticon" class="jive_macro jive_macro_emoticon jive_emote" src="https://community.sap.com/777/images/emoticons/cry.gif"&gt;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;KEYUR PAWAR.&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Sat, 02 Jun 2012 10:07:43 GMT</pubDate>
      <guid>https://community.sap.com/t5/application-development-and-automation-discussions/problem-in-refresh-alv-tree/m-p/8784750#M1678602</guid>
      <dc:creator>keyur_pawar</dc:creator>
      <dc:date>2012-06-02T10:07:43Z</dc:date>
    </item>
    <item>
      <title>Re: Problem in Refresh ALV Tree...</title>
      <link>https://community.sap.com/t5/application-development-and-automation-discussions/problem-in-refresh-alv-tree/m-p/8784751#M1678603</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;You might be creating the class object somewhere in your statement &lt;/P&gt;&lt;P&gt;You have to close that object.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Since you are rerunning with diferent values, since the old object exist... during catalog cretion it will throw error.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Give me the code, i shall point out where to write this clear object satement&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Regards,&lt;/P&gt;&lt;P&gt;venkat&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Sat, 02 Jun 2012 10:39:26 GMT</pubDate>
      <guid>https://community.sap.com/t5/application-development-and-automation-discussions/problem-in-refresh-alv-tree/m-p/8784751#M1678603</guid>
      <dc:creator>venkateswaran_k</dc:creator>
      <dc:date>2012-06-02T10:39:26Z</dc:date>
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