https://community.esri.com/t5/arcgis-pro-questions/python-toolbox/m-p/1671801#M100732 <P>Hi everyone,</P><P>I am newer to using python toolboxes to automate workflows. I am trying to change the symbology of some feature layers that my tool uploads to my map using layer files that I previously put together. For some reason I can't reference the layers in my contents pane from my toolbox, and the symbologies don't get applied to the respective layers.</P><P>Has anyone encountered this before?</P><P>Thanks!</P> Tue, 09 Dec 2025 21:47:43 GMT MaxForsman 2025-12-09T21:47:43Z https://community.esri.com/t5/arcgis-pro-questions/python-toolbox/m-p/1671801#M100732 <P>Hi everyone,</P><P>I am newer to using python toolboxes to automate workflows. I am trying to change the symbology of some feature layers that my tool uploads to my map using layer files that I previously put together. For some reason I can't reference the layers in my contents pane from my toolbox, and the symbologies don't get applied to the respective layers.</P><P>Has anyone encountered this before?</P><P>Thanks!</P> Tue, 09 Dec 2025 21:47:43 GMT https://community.esri.com/t5/arcgis-pro-questions/python-toolbox/m-p/1671801#M100732 MaxForsman 2025-12-09T21:47:43Z https://community.esri.com/t5/arcgis-pro-questions/python-toolbox/m-p/1671828#M100734 <P>don't know if this specifically applies, but have a look at this link</P><P><A href="https://community.esri.com/t5/arcgis-pro-questions/applysymbologyfromlayer-toolbox-python-script/td-p/1240884" target="_blank">Solved: ApplySymbologyFromLayer toolbox Python script prob... - Esri Community</A></P> Tue, 09 Dec 2025 23:11:10 GMT https://community.esri.com/t5/arcgis-pro-questions/python-toolbox/m-p/1671828#M100734 DanPatterson 2025-12-09T23:11:10Z https://community.esri.com/t5/arcgis-pro-questions/python-toolbox/m-p/1671841#M100736 <P>It'd be easier to help with your code, but I'd make sure your input parameter(s) are <A href="https://pro.arcgis.com/en/pro-app/latest/arcpy/geoprocessing_and_python/defining-parameter-data-types-in-a-python-toolbox.htm#:~:text=spatial%20reference%20system.-,Feature%20Layer,-GPFeatureLayer" target="_self">FeatureLayer parameter</A>&nbsp;type.&nbsp;</P> Wed, 10 Dec 2025 00:13:56 GMT https://community.esri.com/t5/arcgis-pro-questions/python-toolbox/m-p/1671841#M100736 AlfredBaldenweck 2025-12-10T00:13:56Z