topic Re: ERROR 999999 while generating DSM/DTM in ArcGIS Pro Questions

ERROR 999999 while generating DSM/DTM

tomkor — Mon, 08 Jan 2024 22:48:56 GMT

I have a workstation with two Intel Xeon processors (28 physical cores/56 logical cores) and I have the same problem with DSM/DTM generation.

Generating Point Cloud (phase 2)...
Start Time: Monday, January 8, 2024 9:02:54 PM
Distributing operation across 28 parallel instances.
ERROR 999999: Something unexpected caused the tool to fail. Contact Esri Technical Support (http://esriurl.com/support) to Report a Bug, and refer to the error help for potential solutions or workarounds.
Failed to execute command. [GenerateDSM.exe]
Failed to execute (GeneratePointCloud).
Failed at Monday, January 8, 2024 9:05:32 PM (Elapsed Time: 2 minutes 38 seconds)

On another machine with one processor or the same machine when I limited in BIOS numbers of cores on each processors to ex. 8 (16 physical cores), everything is OK . DSM and DTM products are generated.

Re: ERROR 999999 while generating DSM/DTM

BillFox — Mon, 08 Jan 2024 22:13:23 GMT

which tool options of GenerateDSM did you have that kicked that error out?

Re: ERROR 999999 while generating DSM/DTM

tomkor — Tue, 09 Jan 2024 18:16:21 GMT

I set default parameters. No matter what I set, it's always the same.

With 23 or less processes set in the Analysis->Environments settings no error. But with 24 or more physical cores error:

DEBUG: GPEventTiming START: GPUtilities::DisconnectDataLayer C:\Users\tomas\AppData\Local\Temp\ArcGISProTemp25380\Untitled\OrthoMapping\cxcx.eomw\Milestones\cxcx_rp.gdb\cxcx_Collection_adjfnl
Distributing operation across 24 parallel instances.
ERROR 999999: Something unexpected caused the tool to fail. Contact Esri Technical Support (http://esriurl.com/support) to Report a Bug, and refer to the error help for potential solutions or workarounds.
Failed to execute command. [GenerateDSM.exe]
DEBUG: GPEventTiming GPFunctionTool::Execute after function execute (elapsed time 137.939000)
DEBUG: GPEventTiming END: GPFunctionTool::Execute (elapsed time 137.952000)
Failed to execute (GeneratePointCloud).
Failed at Monday, January 8, 2024 11:44:16 PM (Elapsed Time: 2 minutes 17 seconds)
DEBUG: GPEventTiming ProcessExecution Execution time 137.975000
DEBUG: GPEventTiming START: GPUtilities::TestForReconnectingOutputLayers for GeneratePointCloud_management
DEBUG: GPEventTiming START: GPUtilities::CleanUpDataLayers index 0
DEBUG: GPEventTiming END: GPUtilities::CleanUpDataLayers index 0 (elapsed time 0.000000)
DEBUG: GPEventTiming START: GPUtilities::CleanUpDataLayers index -10
DEBUG: GPEventTiming END: GPUtilities::CleanUpDataLayers index -10 (elapsed time 0.000000)
DEBUG: GPEventTiming END: GPUtilities::TestForReconnectingOutputLayers for GeneratePointCloud_management (elapsed time 0.027000)
DEBUG: GPEventTiming ProcessExecution ProcessOutputs time (part of PostExecution time) 0.000000
Failed to execute (GeneratePointCloud).
Failed at Monday, January 8, 2024 11:44:17 PM (Elapsed Time: 2 minutes 18 seconds)

Re: ERROR 999999 while generating DSM/DTM

HariKishore — Mon, 21 Jul 2025 12:08:15 GMT

I do get the same error, even when i change the number of cores even then the error persists for me. Any solution to over come this

Re: ERROR 999999 while generating DSM/DTM

DanielFox1 — Mon, 21 Jul 2025 13:26:08 GMT

Hi @tomkor / @HariKishore

You try some of the following:

1. Run Pro as and Administrator
2. Clear anything in your ArcGIS Pro Temp folder

Close ArcGIS Pro.
Navigate to %localappdata%\Temp and delete unnecessary files

3. Turn off background processing

Go to Geoprocessing → Options.
Uncheck “Enable background processing”.

4. Check for any bad geometries

Use the Repair Geometry tool on your inputs.
Replace null values with 0 using Calculate Field or Con.

5. Shorten any file paths and avoid special characters, I noticed you have full stops in some sections of the file path can you output into a Temp folder on a C:Drive and test if the issue happens again?

999999: Something unexpected caused the tool to fail. Contact Esri Technical Support (http://esriurl.com/support) to Report a Bug, and refer to the error help for potential solutions or workarounds.—ArcGIS Pro | Documentation

Re: ERROR 999999 while generating DSM/DTM

HariKishore — Mon, 21 Jul 2025 13:57:38 GMT

Thank you, will check, The error is for ortho, dsm and dem generation process. Repair geometry point is not valid for this in my view

Re: ERROR 999999 while generating DSM/DTM

HariKishore — Mon, 28 Jul 2025 07:58:35 GMT

I tried but still the same error persists, I changed the generation folder to one drive, thinking may be the error due to space constraint, still the problem persists. I checked in the folders path, found that few zlas files got created in the temp path. but process is getting same error in between. The dataset is sample data from esri site.

Re: ERROR 999999 while generating DSM/DTM

HariKishore — Tue, 26 Aug 2025 11:53:05 GMT

Hi every one,

The system in which i am running this has 24 cores, i tried to run the same with different processor numbers. Finally the process is running with number or processors 5 in my system. i do not know the reason for error if number of processors more than 5. Hope this helps some one in future facing similar error