topic Re: ArcGIS Pro 2.5: How to overwrite outputs of geoprocessing tools when run in a model builder? in ModelBuilder Questions

ArcGIS Pro 2.5: How to overwrite outputs of geoprocessing tools when run in a model builder?

JamalNUMAN — Fri, 08 May 2020 16:22:40 GMT

ArcGIS Pro 2.5: How to overwrite outputs of geoprocessing tools when run in a model builder?

Despite the fact that “Allow geoprocessing tools to overwrite existing datasets” option is checked, outputs appear not be overwritten when working with model builder.

What could be the issue here?

Re: ArcGIS Pro 2.5: How to overwrite outputs of geoprocessing tools when run in a model builder?

oliviersouligno — Wed, 13 May 2020 11:59:56 GMT

Hi Jamal,

Wow, I have exactly the same issue, I am happy to see that I am not the only one to experiment this .

Did you find a solution ?

Re: ArcGIS Pro 2.5: How to overwrite outputs of geoprocessing tools when run in a model builder?

JamalNUMAN — Wed, 13 May 2020 15:08:05 GMT

Hi Olivier,

I’m still waiting for some feedback from esri experts on this issue. Not sure if some of them has already explored this problem

Re: ArcGIS Pro 2.5: How to overwrite outputs of geoprocessing tools when run in a model builder?

JoeBorgione — Wed, 13 May 2020 15:26:13 GMT

I don't write any models, but you should be able to set an environment that allows you to over write existing data.

Take a look here: Geoprocessing environment settings—ArcGIS Pro | Documentation

Re: ArcGIS Pro 2.5: How to overwrite outputs of geoprocessing tools when run in a model builder?

JamalNUMAN — Fri, 15 May 2020 14:38:06 GMT

I couldn’t find myself an option that allows overwriting except the one that appears in screenshots of my first post.

Re: ArcGIS Pro 2.5: How to overwrite outputs of geoprocessing tools when run in a model builder?

JamalNUMAN — Sat, 20 Jun 2020 09:27:26 GMT

For example, if the cell size the in the “Euclidian Distance” is changed, then the outputs are not replaced, instead new raster are created!

Is there a way to overwrite such that the number of outputs are kept 5 for my model?

Re: ArcGIS Pro 2.5: How to overwrite outputs of geoprocessing tools when run in a model builder?

AZendel — Thu, 02 Mar 2023 17:43:53 GMT

If I'm interpreting these posts correctly, there is no way to specify that a particular/individual geoprocessing model should overwrite its outputs. The only option is to set this in the Pro options tab as shown in the first post. Is this still the case? I'm calling a lot of geoprocessing models from ArcPy and I want to allow some of the models to overwrite existing outputs. This setting in the Pro user interface is likely ignored when running a completely standalone ArcPy script.

Please confirm when you can. And ESRI, if you're reading this, please allow this option to be set within individual models.

Re: ArcGIS Pro 2.5: How to overwrite outputs of geoprocessing tools when run in a model builder?

curtvprice — Thu, 02 Mar 2023 19:49:16 GMT

When calling your model from arcpy, arcpy.env.overwriteOutput should be set to True. Is this not working? Often in the desktop apps it is common for a layer to not easily release file locks (regardless of overwrite setting), lots of bug fixes of that through the years.

When running standalone outside of the desktop app, there aren't data layers in the interface (just in memory when created) so these problems are less likely - IF you make sure the environment overwriteOutput is set to True in your code.

Re: ArcGIS Pro 2.5: How to overwrite outputs of geoprocessing tools when run in a model builder?

wayfaringrob — Tue, 23 Jul 2024 17:27:30 GMT

Facing the same issue in Pro 3.3.1 - I have a model built that I would like to use to refresh a map layer, but it seems that each and every time, I need to delete the output layer first -- despite having toggled the overwrite in settings.

Re: ArcGIS Pro 2.5: How to overwrite outputs of geoprocessing tools when run in a model builder?

AZendel — Fri, 16 Aug 2024 15:01:22 GMT

Thanks for the suggestion. I just tried arcpy.env.overwriteOutput = True and it does work.

Re: ArcGIS Pro 2.5: How to overwrite outputs of geoprocessing tools when run in a model builder?

Markbe_utco — Thu, 19 Sep 2024 16:05:22 GMT

Bump topic. Experiencing the same issue.

Yes, I understand that converting the model to a python script and adding arcpy.env.overwriteOutput = True will work. I'd like to make sure the model actually works before I convert it python script. Why is there no way to overwrite a feature class when a tool is run within ModelBuilder?

Re: ArcGIS Pro 2.5: How to overwrite outputs of geoprocessing tools when run in a model builder?

mbramos — Fri, 25 Oct 2024 13:43:14 GMT

Is there a way to write this as a custom script tool and pop it into an existing Model? The model I'm creating has to be able to be used in the GP pane as a 'tool'.

Re: ArcGIS Pro 2.5: How to overwrite outputs of geoprocessing tools when run in a model builder?

Kevin_MacLeod — Tue, 13 May 2025 17:12:15 GMT

bump. It's 2025, still an issue. I had expected to see that as an option in Environments for a step in a tool. I am circling back after a long time, to using ModelBuilder and will be relying on it heavily. Definitely a significant issue. Also, one I would imagine is trivially solved in the code by the Esri devs. Simply implement that python line setting that Boolean under the hood, so it works in the ModelBuilder GUI. This would eliminate the laborious step of deleting all layers at each step of the way when necessary, every time, every model, that we have to add

Each tool or step should have this setting Environments, Overwrite. I opened this up for clip today for example and expected it to be there. I'm aware of the global Env in Pro but models should have this so they can override it and be re-used across orgs by other users without having to ask them to change any Env settings.

Re: ArcGIS Pro 2.5: How to overwrite outputs of geoprocessing tools when run in a model builder?

TylerJones — Tue, 26 Aug 2025 19:54:44 GMT

Bump

Re: ArcGIS Pro 2.5: How to overwrite outputs of geoprocessing tools when run in a model builder?

Key — Thu, 30 Oct 2025 14:09:08 GMT

Experiencing this as well. Model Builder in 3.4.2 still no output overwrite regardless of Geoprocessing option being set to allow overwrite.
Come on now...