Script for running Feature Class To Coverage tool runs into error on arcgis server

Question

I have created a script for converting feature classes to coverage and it runs fine in arcmap. But after publishing and running it on the server, it fails to execute and returns the following error message:

"Unable to complete operation. Error executing tool.: Traceback (most recent call last): File "", line 154, in execute File "c:\program files\arcgis\server\arcpy\arcpy\conversion.py", line 1576, in FeatureclassToCoverage raise e RuntimeError: Object: Error in executing tool Failed to execute (CoverageArcsNodes). Failed to execute (Select Coverage Features)."

import arcpy
import tempfile
class Toolbox(object):
def __init__(self): 
 self.label = "Toolbox"
 self.alias = ""
 self.tools = [CoverageArcsNodes]
class CoverageArcsNodes(object):
def __init__(self):
 self.label = "Select Coverage Features"
 self.description = ""
 self.canRunInBackground = True
def getParameterInfo(self):
 param0 = arcpy.Parameter(
 displayName="Input Line Feature Classes",
 name="in_lineFeatures",
 datatype="GPFeatureLayer",
 parameterType="Required",
 direction="Input",
 multiValue=True
 ) 
 # Second parameter
 param1 = arcpy.Parameter(
 displayName="Input Point Feature Classes",
 name="in_pointFeatures",
 datatype="GPFeatureLayer",
 parameterType="Required",
 direction="Input",
 multiValue=True
 )
 params = [param0, param1]
 return params
def execute(self, params, messages):
 arcpy.env.workspace="C:\\Users\\DeveloperA\\Desktop\\SEMNAN DB\\SemnanDB.SDE.gdb"
 coverageOutDir= "C:\\Users\\DeveloperA\\Desktop\\tempCoverage"
 #lines
 #lineValues= params[0].valueAsText.split(";")
 lineValues= params[0].values
 layerCnt=1 
 for fc in lineValues: 
 layerName="layer"+str(layerCnt)
 arcpy.AddField_management(fc,"featureClassName","TEXT") 
 arcpy.MakeFeatureLayer_management(fc,layerName)
 arcpy.SelectLayerByAttribute_management(layerName)
 arcpy.AddMessage("workspace="+arcpy.env.workspace) 
 layerCnt=layerCnt+1
 #points 
 pointValues= params[1].values 
 for fc in pointValues: 
 layerName="layer"+str(layerCnt)
 arcpy.AddField_management(fc,"featureClassName","TEXT") 
 arcpy.MakeFeatureLayer_management(fc,layerName)
 arcpy.SelectLayerByAttribute_management(layerName) 
 layerCnt=layerCnt+1 
 arcpy.CreateFeatureclass_management(arcpy.env.workspace, "points", "POINT",params[1].values[0])
 arcpy.AddField_management("points","featureClassName","TEXT") 
 arcpy.AddField_management("points","OriginalOBJECTID","TEXT")
 linesObjIdFldMap = arcpy.FieldMap()
 linesObjIdFldMap.addInputField(params[0].values[0],"OBJECTID")
 linesObjIdFldMap.outputField.name="OriginalOBJECTID" 
 linesFeatureClassFldMap = arcpy.FieldMap()
 linesFeatureClassFldMap.addInputField(params[0].values[0],"featureClassName")
 linesFeatureClassFldMap.outputField.name="featureClassName" 
 lineFieldMappings = arcpy.FieldMappings()
 lineFieldMappings.addFieldMap(linesObjIdFldMap)
 lineFieldMappings.addFieldMap(linesFeatureClassFldMap)
 pointsObjIdFldMap = arcpy.FieldMap()
 pointsObjIdFldMap.addInputField(params[1].values[0],"OBJECTID")
 pointsObjIdFldMap.outputField.name="OriginalOBJECTID" 
 pointsFeatureClassFldMap = arcpy.FieldMap()
 pointsFeatureClassFldMap.addInputField(params[1].values[0],"featureClassName")
 pointsFeatureClassFldMap.outputField.name="featureClassName" 
 pointFieldMappings = arcpy.FieldMappings()
 pointFieldMappings.addTable(params[1].values[0])
 pointFieldMappings.addFieldMap(pointsObjIdFldMap)
 pointFieldMappings.addFieldMap(pointsFeatureClassFldMap) 
 arcpy.Merge_management(params[0].values,"lines",lineFieldMappings)
 arcpy.Append_management(params[1].values,"points","NO_TEST",pointFieldMappings) 
 arcpy.FeatureclassToCoverage_conversion(in_features="'"+arcpy.env.workspace+"\\lines' ARC;'"+arcpy.env.workspace+"\\points' POINT;",out_cover=coverageOutDir) 
 arcpy.MakeFeatureLayer_management(coverageOutDir+"\\arc","lines_layer")
 arcpy.SelectLayerByAttribute_management("lines_layer") 
 return

I am a total newbie this sort of stuff and I am totally confused how to proceed.

P.S my guess is that I have messed up the workspaces and paths (dunno how), either that or arcgis server does not support the tool because when I comment out the line that calls the arcpy.FeatureclassToCoverage_conversion tool the script executes with no errors.

• Alex Tereshenkov: I suggest publishing a script tool instead of Python toolbox as a GP service
• Midavalo: You have a couple of indentation issues (maybe from pasting, but worth checking) class Toolbox(object): and class CoverageArcsNodes(object): should have the following def block indented further
• Meghdad: @Midavalo Thanks for the comment. It's because of pasting of course. As I said, it runs fine in ArcMap.
• Meghdad: @AlexTereshenkov Thanks for the comment. Do you mean a python tool? Not sure if that would make any difference. Worth a try though. :)
• Meghdad: @AlexTereshenkov I didn't see an essential difference in two approaches. pro.arcgis.com/en/pro-app/arcpy/geoprocessing_and_python/… Also I am going to edit my question.

Answer 1

I changed this line arcpy.FeatureclassToCoverage_conversion(in_features="'"+arcpy.env.workspace+"\\lines' ARC;'"+arcpy.env.workspace+"\\points' POINT;",out_cover=coverageOutDir) to this

arcpy.FeatureclassToCoverage_conversion(in_features="'lines' ARC; 'points' POINT;",out_cover=coverageOutDir) 

and it worked. :)