https://community.esri.com/t5/python-questions/current-invalid-when-using-arcpy-in-layer-labeling/m-p/1485644#M70736 <P>I have only seen examples using the LabelClass within the mp module as in the examples here</P><P><A href="https://pro.arcgis.com/en/pro-app/latest/arcpy/mapping/labelclass-class.htm" target="_blank">LabelClass—ArcGIS Pro | Documentation</A></P><P>I don't know if arcpy used to create expressions in the environment you show is possible since it doesn't access a project directly</P> Wed, 05 Jun 2024 19:55:32 GMT DanPatterson 2024-06-05T19:55:32Z https://community.esri.com/t5/python-questions/current-invalid-when-using-arcpy-in-layer-labeling/m-p/1485613#M70735 <P>When attempting to use arcpy.mp.ArcGISProject('CURRENT') within a labeling properties class python expression a map drawing alert is generated although the expression is valid. I simplified the label logic to show just the key issue. <A href="https://support.esri.com/en-us/knowledge-base/faq-is-it-possible-to-use-the-current-keyword-in-a-stan-000027431" target="_self">This technical support FAQ page</A> indicates that&nbsp;arcpy.mp.ArcGISProject('CURRENT') returns the OSError when ran in a standalone environment. I am trying to run this in the ArcGIS Pro labeling properties. T<A href="https://pro.arcgis.com/en/pro-app/latest/arcpy/mapping/guidelines-for-arcpy-mapping.htm#:~:text=Reference%20a%20project,the%20CURRENT%20keyword." target="_self">his Arcpy documentation</A> doesn't designate that labeling properties is outside of the application. Is labeling properties somehow considered a standalone environment, even though it appears to be within ArcGIS Pro? <A href="https://community.esri.com/t5/user/viewprofilepage/user-id/746669" target="_blank" rel="noopener">@ShareUser</A></P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="gis_bCapell_0-1717614586260.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/106297i662E567AF4EA2E2A/image-size/medium?v=v2&amp;px=400" role="button" title="gis_bCapell_0-1717614586260.png" alt="gis_bCapell_0-1717614586260.png" /></span></P><P>&nbsp;</P><P>&nbsp;</P> Wed, 05 Jun 2024 19:17:17 GMT https://community.esri.com/t5/python-questions/current-invalid-when-using-arcpy-in-layer-labeling/m-p/1485613#M70735 BenCapell_NWTF10 2024-06-05T19:17:17Z https://community.esri.com/t5/python-questions/current-invalid-when-using-arcpy-in-layer-labeling/m-p/1485644#M70736 <P>I have only seen examples using the LabelClass within the mp module as in the examples here</P><P><A href="https://pro.arcgis.com/en/pro-app/latest/arcpy/mapping/labelclass-class.htm" target="_blank">LabelClass—ArcGIS Pro | Documentation</A></P><P>I don't know if arcpy used to create expressions in the environment you show is possible since it doesn't access a project directly</P> Wed, 05 Jun 2024 19:55:32 GMT https://community.esri.com/t5/python-questions/current-invalid-when-using-arcpy-in-layer-labeling/m-p/1485644#M70736 DanPatterson 2024-06-05T19:55:32Z