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I have a polygon shapefile which has polygons that have single mill name attributed to it and also some polygons which have multiple names in other columns (Mill1, Mill2,Mill3).

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What I would like to do is be able to split the polygon with multiple Mill name attributes into new polygons so that they are like the below.

enter image description here

I am struggling to figure out a way to do this easily in ArcGIS. I am also open to options of solving this using arcpy.

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    Have you looked at the split by attributes tool? You could run it in a model or multiple times in batch mode for each field until you are done – johns Mar 23 '18 at 18:10
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    Along the lines of Johns' suggestion... This link may help. – ZrSiO4 Mar 23 '18 at 18:18
  • The only issue is that if the same name e.g M200 under the Mill1 field is duplicated 20 times, it won't get split into separate polygons if I choose that field. It only works if the names are unique under that specific field. – Funkeh-Monkeh Mar 23 '18 at 19:12
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    If you combine MIll1,Mill2,etc into a single column, you can adapt this arcpy code gis.stackexchange.com/questions/83210/… – klewis Mar 23 '18 at 20:12
  • you could use the field calculator and concatenate the ID field and Mill field to create unique names in a new field...something like !Mill!+ str(!ID!) – ZrSiO4 Mar 23 '18 at 20:37

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