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    <title>topic Mashup Exception Expression Error in Power Query</title>
    <link>https://community.fabric.microsoft.com/t5/Power-Query/Mashup-Exception-Expression-Error/m-p/4263700#M141011</link>
    <description>&lt;P&gt;Hi,&lt;/P&gt;&lt;P&gt;I have a Dataflow Gen2 that sources several tables from Dataflow Gen1, and both dataflows were running successfully through a pipeline and load tables into my lakehouse as data destination.&lt;/P&gt;&lt;P&gt;I recently decided to delete one of the tables from both dataflows. I simply removed it from the queries list and my lakehouse. However, since doing so, my Dataflow Gen2 has failed to run, and I am now getting the following mashup error:&lt;/P&gt;&lt;BLOCKQUOTE&gt;&lt;P&gt;Mashup Exception Expression Error: Couldn't refresh the entity due to an issue with the mashup document. MashupException.Error: Expression.Error: The key didn't match any rows in the table.&lt;/P&gt;&lt;/BLOCKQUOTE&gt;&lt;P&gt;Since the table no longer appears in my Dataflow sources and lakehouse, I’m unsure how to resolve this issue. Any guidance would be greatly appreciated!&lt;/P&gt;&lt;P&gt;Thank you in advance!&lt;/P&gt;</description>
    <pubDate>Wed, 30 Oct 2024 10:27:56 GMT</pubDate>
    <dc:creator>Shg</dc:creator>
    <dc:date>2024-10-30T10:27:56Z</dc:date>
    <item>
      <title>Mashup Exception Expression Error</title>
      <link>https://community.fabric.microsoft.com/t5/Power-Query/Mashup-Exception-Expression-Error/m-p/4263700#M141011</link>
      <description>&lt;P&gt;Hi,&lt;/P&gt;&lt;P&gt;I have a Dataflow Gen2 that sources several tables from Dataflow Gen1, and both dataflows were running successfully through a pipeline and load tables into my lakehouse as data destination.&lt;/P&gt;&lt;P&gt;I recently decided to delete one of the tables from both dataflows. I simply removed it from the queries list and my lakehouse. However, since doing so, my Dataflow Gen2 has failed to run, and I am now getting the following mashup error:&lt;/P&gt;&lt;BLOCKQUOTE&gt;&lt;P&gt;Mashup Exception Expression Error: Couldn't refresh the entity due to an issue with the mashup document. MashupException.Error: Expression.Error: The key didn't match any rows in the table.&lt;/P&gt;&lt;/BLOCKQUOTE&gt;&lt;P&gt;Since the table no longer appears in my Dataflow sources and lakehouse, I’m unsure how to resolve this issue. Any guidance would be greatly appreciated!&lt;/P&gt;&lt;P&gt;Thank you in advance!&lt;/P&gt;</description>
      <pubDate>Wed, 30 Oct 2024 10:27:56 GMT</pubDate>
      <guid>https://community.fabric.microsoft.com/t5/Power-Query/Mashup-Exception-Expression-Error/m-p/4263700#M141011</guid>
      <dc:creator>Shg</dc:creator>
      <dc:date>2024-10-30T10:27:56Z</dc:date>
    </item>
    <item>
      <title>Re: Mashup Exception Expression Error</title>
      <link>https://community.fabric.microsoft.com/t5/Power-Query/Mashup-Exception-Expression-Error/m-p/4263961#M141028</link>
      <description>&lt;P&gt;This error usually (but not necessarily) comes from performing a specific index condition on a table, as shown in the following code:&lt;/P&gt;&lt;LI-CODE lang="markup"&gt;// error
#table({"a", "b"}, {{1, 2}, {3, 4}}){[a = 1, b = 3]}

// ok 
#table({"a", "b"}, {{1, 2}, {3, 4}}){[a = 1, b = 2]}&lt;/LI-CODE&gt;</description>
      <pubDate>Wed, 30 Oct 2024 13:44:56 GMT</pubDate>
      <guid>https://community.fabric.microsoft.com/t5/Power-Query/Mashup-Exception-Expression-Error/m-p/4263961#M141028</guid>
      <dc:creator>ZhangKun</dc:creator>
      <dc:date>2024-10-30T13:44:56Z</dc:date>
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