https://community.qlik.com/t5/App-Development/why-these-same-two-fields-from-different-sheets-wont-associate/m-p/1580344#M42370 <P>Hi there</P><P>It is something done in the data manager. It creates unique field names by adding the table name as a 'prefix' to the field name. However, the field name 'Stream' is already reserved in your case. You can do one of three things:</P><P>1. Use the data load editor and just load the tables normally - they will concatenate themselves on the common field name(s).</P><P>2. Rename the <STRONG>Association name</STRONG> at the bottom of that screen in your picture to Stream1 (for example).</P><P>3. Change the Stream column names in your original data sets to Stream1 and Stream2 (for example) and rename the association to Stream at the bottom of that screen in your picture.</P><P>Regards,</P><P>Mauritz</P> Wed, 15 May 2019 11:07:33 GMT Mauritz_SA 2019-05-15T11:07:33Z https://community.qlik.com/t5/App-Development/why-these-same-two-fields-from-different-sheets-wont-associate/m-p/1580311#M42368 <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Screenshot 2019-05-15 at 2.52.23 PM.png" style="width: 999px;"><img src="https://community.qlik.com/t5/image/serverpage/image-id/12065i905C64B3080E11ED/image-size/large?v=v2&amp;px=999" role="button" title="Screenshot 2019-05-15 at 2.52.23 PM.png" alt="Screenshot 2019-05-15 at 2.52.23 PM.png" /></span></P> Wed, 15 May 2019 10:07:48 GMT https://community.qlik.com/t5/App-Development/why-these-same-two-fields-from-different-sheets-wont-associate/m-p/1580311#M42368 anujssvgks 2019-05-15T10:07:48Z https://community.qlik.com/t5/App-Development/why-these-same-two-fields-from-different-sheets-wont-associate/m-p/1580344#M42370 <P>Hi there</P><P>It is something done in the data manager. It creates unique field names by adding the table name as a 'prefix' to the field name. However, the field name 'Stream' is already reserved in your case. You can do one of three things:</P><P>1. Use the data load editor and just load the tables normally - they will concatenate themselves on the common field name(s).</P><P>2. Rename the <STRONG>Association name</STRONG> at the bottom of that screen in your picture to Stream1 (for example).</P><P>3. Change the Stream column names in your original data sets to Stream1 and Stream2 (for example) and rename the association to Stream at the bottom of that screen in your picture.</P><P>Regards,</P><P>Mauritz</P> Wed, 15 May 2019 11:07:33 GMT https://community.qlik.com/t5/App-Development/why-these-same-two-fields-from-different-sheets-wont-associate/m-p/1580344#M42370 Mauritz_SA 2019-05-15T11:07:33Z