Latest Contributions by Katie_Clark

This is a very old post, but as far as I'm concerned, if posts like this still show up in a Google search, then it's still relevant! Thank you @mikaël for getting me on the right track - it's important to do it with the REST API, modifying the JSON through ArcGIS Online Assistant did not fully delete the layer from the service (I found that it removed it from the Item Details page, but when viewing the service definition, the item was still there. I think AGOL Assistant only removes it from part of the JSON) Anyway, I'm writing this post to share a script I wrote to put this functionality into a Python tool that can be run in ArcGIS Pro. I hope it maybe helps someone with this process, especially those who don't have a lot of experience with working with the API. Regarding toolbox setup, add this script and set the Parameters like this, and it should work like a charm.   from arcgis.gis import GIS from arcgis.features import FeatureLayerCollection import arcpy # Tool input parameters item_id = arcpy.GetParameterAsText(0) # String (required) layer_id = arcpy.GetParameter(1) # Long (required) def main(): gis = GIS("home") # Uses ArcGIS Pro sign-in session item = gis.content.get(item_id) fs = FeatureLayerCollection.fromitem(item) layer_ids = [lyr.properties.id for lyr in fs.layers] arcpy.AddMessage(f"Available Layer IDs: {layer_ids}") if layer_id not in layer_ids: arcpy.AddWarning(f"Layer ID {layer_id} does not exist in the feature service.") delete_payload = { "layers": [ {"id": layer_id} ] } try: result = fs.manager.delete_from_definition(delete_payload) if result['success']: arcpy.AddMessage(f"Successfully deleted layer ID {layer_id}.") except Exception as e: arcpy.AddError(f"Error: {e}") if __name__ == "__main__": main()   ... View more