topic merge tool does not overwrite in model builder in ArcGIS Pro Questions

merge tool does not overwrite in model builder

Anne-MarieDubois — Thu, 15 Aug 2024 18:14:51 GMT

Hi,

I've this model builder :

It works if I run it from the builder window but if I run it as a tool, I always get an error saying that the feature class from the merge tool already exists and that there can't be 2 fc with the same name.

However, my ArcGIS Pro options are set to overwrite AND if I try the merge tool alone (with the same output name), it works.

What's the problem?

Thanks!

Re: merge tool does not overwrite in model builder

Robert_LeClair — Wed, 21 Aug 2024 21:24:58 GMT

There is a webpage for Error 002852 - 002852: <Value>: <Value> exists within geodatabase as <value>. A feature class name can only exist once within a geodatabase, including within all feature datasets.—ArcGIS Pro | Documentation - question for you, does the output from ModelBuilder go into a Feature Dataset?

Re: merge tool does not overwrite in model builder

Matt-Goodman — Wed, 15 Apr 2026 14:43:35 GMT

I'm noticing this exact same behavior, using ArcGIS Pro 3.6. My output is not going to a feature dataset.

Re: merge tool does not overwrite in model builder

Robert_LeClair — Wed, 15 Apr 2026 20:14:47 GMT

Questions: what type of geodatabase are you using? File or Enterprise? Also are you using the in_memory workspace at all?

Re: merge tool does not overwrite in model builder

Matt-Goodman — Wed, 15 Apr 2026 20:22:19 GMT

Input is from an enterprise geodatabase but output is a file geodatabase. Not doing any geoprocessing in-memory.

Re: merge tool does not overwrite in model builder

Robert_LeClair — Fri, 24 Apr 2026 17:02:45 GMT

Thank you for the response. There's an older Support case about this item that was resolved by the customer disconnecting the locks on their enterprise geodatabase by navigating to the Catalog Pane, right-clicking on the feature class being overwritten, locks and disconnect. Then the customer was able to overwrite the layer.