"GenerateTransectsAlongLines" License Error when running as part of a script.

Anonymous User

I am having an issue with the GenerateTransectsAlongLines command when I try running it through an ArcToolbox script in ArcGIS Pro 2.9.3. The command runs fine at the Python Window command line and also when running manually from the Tools popup. I can run other commands from the Arcpy module via scripting no problem but I get a license error when trying to run this particular command. I have an Advanced license (which shouldn't matter as it's a basic Arcpy command). I also switched back to the default read-only Python Environment in case something might have gone corrupt in the custom environments I setup but no success. Also tried formatting the string parameters as shown below but still no success.

I extracted the relevant code from my script below:

import arcpy

Output_Workspace = arcpy.GetParameterAsText(0)

Output_Vector_GDB_Workspace = arcpy.GetParameterAsText(1)

Input_DEM = arcpy.GetParameterAsText(2)
if Input_DEM == '#' or not Input_DEM:
    Input_DEM = "RawLidarDTM" # provide a default value if unspecified

Input_Watercourses = arcpy.GetParameterAsText(3)
if Input_Watercourses == '#' or not Input_Watercourses:
    Input_Watercourses = "OHN WC" # provide a default value if unspecified

Input_Waterbodies = arcpy.GetParameterAsText(4)
if Input_Waterbodies == '#' or not Input_Waterbodies:
    Input_Waterbodies = "OHN WB" # provide a default value if unspecified

Input_Distance = arcpy.GetParameterAsText(5)
if Input_Distance == '#' or not Input_Distance:
    Input_Distance = 100 # provide a default value if unspecified

Input_Length = arcpy.GetParameterAsText(6)
if Input_Length == '#' or not Input_Length:
    Input_Length = 400 # provide a default value if unspecified

# Get characteristics
descR = arcpy.Describe(Input_DEM)
descV = arcpy.Describe(Input_Waterbodies)

#Set environment variables
arcpy.env.workspace = Output_Workspace
arcpy.env.outputCoordinateSystem = descV.spatialReference # Input_DEM
arcpy.env.extent = descV.extent
arcpy.env.snapRaster = Input_DEM
arcpy.env.cellSize = str(int(4 * descR.meanCellHeight)) # For half metre lidar, recommended resolution output flattened surface is 2m to create a smoother surface and minimize noise.

# Extract Measure Units
spatial_ref = arcpy.Describe(Input_DEM).spatialReference
mUnit = spatial_ref.linearUnitName
if mUnit == "Meter":
    mUnits = "Meters"
else:
    if mUnit == "Foot_US":
        mUnits = "Feet"
    else:
        arcpy.AddError("Units can only be Meters or Feet!")
        sys.exit()

# Local Variables 
WC_Transects = Output_Vector_GDB_Workspace + "\\WC_Transects"
mDistance = str(Input_Distance) + " " + mUnits.lower()
mLength = str(Input_Length) + " " + mUnits.lower()

arcpy.AddMessage("Generating transects along watercourse centrelines..")
arcpy.AddMessage("Units: " + mUnits + " Dist: " + mDistance + " Length: " + mLength)
arcpy.GenerateTransectsAlongLines_management(Input_Watercourses, WC_Transects, mDistance, mLength, "NO_END_POINTS")

Error message is as follows:

Start Time: June 27, 2022 12:08:57 PM

Generating transects along watercourse centrelines..

Units: Meters Dist: 100 meters Length: 400 meters

Traceback (most recent call last):
  File "C:\_Workspace\Projects-2022-23\Elevation\HydroFlattening\CreateTransects.py", line 156, in <module>
    arcpy.GenerateTransectsAlongLines_management(Input_Watercourses, WC_Transects, mDistance, mLength, "NO_END_POINTS")
  File "C:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\management.py", line 21801, in GenerateTransectsAlongLines
    raise e
  File "C:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\management.py", line 21798, in GenerateTransectsAlongLines
    retval = convertArcObjectToPythonObject(gp.GenerateTransectsAlongLines_management(*gp_fixargs((in_features, out_feature_class, interval, transect_length, include_ends), True)))
  File "C:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\geoprocessing\_base.py", line 512, in <lambda>
    return lambda *args: val(*gp_fixargs(args, True))
arcgisscripting.ExecuteError: Failed to execute. Parameters are not valid. 
ERROR 000824: The tool is not licensed.
Failed to execute (GenerateTransectsAlongLines).

Failed script (null)...

Failed to execute (CreateTransects).

Failed at June 27, 2022 12:08:58 PM (Elapsed Time: 0.78 seconds)

 

Any thoughts would be appreciated.

Thanks,

John

Anonymous User

Further discussions with Esri Tech Support led to the discovery of a 'bug' when working with the new '.atbx' Toolbox format introduced in version 2.9.x. The new toolbox might be more strict on how tools are programmed (eg. following proper Python language initialization and syntax).  Some of the new commands introduced may not always have the same programming rigor applied to them as the more 'established' commands that have been around for years. But we're not sure as of yet the exact nature of the problem. 

However, there is a work-around... By default, when you create a toolbox in Pro, it will create it only in the new ".atbx" format. But once created, you can convert it back to the previous toolbox format by right-clicking the toolbox and selecting 'Save Toolbox to Version'. Make sure to select "2.8" as the Target Version and ensure your Output Toolbox path is correct before converting. Similarly, any older ".tbx" toolbox can be seen by default in the new versions of Pro (3.0.0 included) and you can keep working with them normally with no issue. Performing this procedure made the Transect Tool functional again.