merge tool does not overwrite in model builder

[Anne-MarieDubois]

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!

[Robert_LeClair]

There is a webpage for Error 002852 - 002852: <Value>: <Value> exists within geodatabase as <value>. A feature class name can only exist o... - question for you, does the output from ModelBuilder go into a Feature Dataset?