https://community.esri.com/t5/arcgis-online-questions/join-existing-map-to-external-csv/m-p/1537055#M61438 <P>This is one way:&nbsp;<A href="https://community.esri.com/t5/arcgis-pro-questions/how-to-update-attribute-table-from-a-csv-and-add/td-p/1241438" target="_blank">https://community.esri.com/t5/arcgis-pro-questions/how-to-update-attribute-table-from-a-csv-and-add/td-p/1241438'</A></P><P>Otherwise you should be able to update your data using the ID field through the append tool.&nbsp;</P><P>&nbsp;</P> Tue, 10 Sep 2024 19:41:00 GMT Laura 2024-09-10T19:41:00Z https://community.esri.com/t5/arcgis-online-questions/join-existing-map-to-external-csv/m-p/1536230#M61390 <P>Hello, I am pretty sure this can be done but so far I have not found the right answer.&nbsp;</P><P>I have a map that has about 200 records in it. Each record was georeferenced and has a unique ID</P><P>The data behind the unique ID changes regularly in a CSV file. I was wanting to just update the existing records in the map with the new data for each unique ID.&nbsp;</P><P>Is there a way to join the unique ID for each record to an external CSV file?&nbsp;</P><P>Thank you.</P><P>Fen How</P> Sun, 08 Sep 2024 02:26:11 GMT https://community.esri.com/t5/arcgis-online-questions/join-existing-map-to-external-csv/m-p/1536230#M61390 FenHow 2024-09-08T02:26:11Z https://community.esri.com/t5/arcgis-online-questions/join-existing-map-to-external-csv/m-p/1537055#M61438 <P>This is one way:&nbsp;<A href="https://community.esri.com/t5/arcgis-pro-questions/how-to-update-attribute-table-from-a-csv-and-add/td-p/1241438" target="_blank">https://community.esri.com/t5/arcgis-pro-questions/how-to-update-attribute-table-from-a-csv-and-add/td-p/1241438'</A></P><P>Otherwise you should be able to update your data using the ID field through the append tool.&nbsp;</P><P>&nbsp;</P> Tue, 10 Sep 2024 19:41:00 GMT https://community.esri.com/t5/arcgis-online-questions/join-existing-map-to-external-csv/m-p/1537055#M61438 Laura 2024-09-10T19:41:00Z