https://community.qlik.com/t5/Talend-Studio/SCD/m-p/2370467#M133505 I have a requirement where "source key" column is a SCD type 2 field. The field can be either under "SOURCE KEY" or under TYPE 2 Field. I am not able to use the same column in both the places. <BR /><BR />source table (col1, col2, col3,col4 has unique index)<BR />col1 , col2 , col3 , col4 , col5<BR />SCD screen<BR />Source key - col1, col2, col3,col4 <BR />Type 2 field - col3 , col5<BR />I am able to place col3 either under "SOURCE KEY" or under Type 2 Field<BR />How can I acheive this? Tue, 15 May 2012 20:49:21 GMT _AnonymousUser 2012-05-15T20:49:21Z https://community.qlik.com/t5/Talend-Studio/SCD/m-p/2370467#M133505 I have a requirement where "source key" column is a SCD type 2 field. The field can be either under "SOURCE KEY" or under TYPE 2 Field. I am not able to use the same column in both the places. <BR /><BR />source table (col1, col2, col3,col4 has unique index)<BR />col1 , col2 , col3 , col4 , col5<BR />SCD screen<BR />Source key - col1, col2, col3,col4 <BR />Type 2 field - col3 , col5<BR />I am able to place col3 either under "SOURCE KEY" or under Type 2 Field<BR />How can I acheive this? Tue, 15 May 2012 20:49:21 GMT https://community.qlik.com/t5/Talend-Studio/SCD/m-p/2370467#M133505 _AnonymousUser 2012-05-15T20:49:21Z https://community.qlik.com/t5/Talend-Studio/SCD/m-p/2370468#M133506 Hi <BR />I don't think you can do this. <BR />The function of Source key is to ensure the unicity of the incoming data which is forbidden for updating. <BR />Type 2 field is the field which can be updated. <BR />The concepts of Source key and type 2 field are conflicting. <BR />Regards, <BR />Pedro Wed, 16 May 2012 07:56:15 GMT https://community.qlik.com/t5/Talend-Studio/SCD/m-p/2370468#M133506 Anonymous 2012-05-16T07:56:15Z