Hi all,
I'm trying to customize a diagram template to run in a utility network. The model is just at the beginning, as you can see from the image (it creates a new diagram template named TEST1). If I apply it to a pipeline selection with just 3 selected records it returns the "ERROR 160189 - The spatial index grid size is invalid" (no error occurs if I select 1 or 2 pipes).

The strange thing is that the same error occurs also if a click on the default template "Basic" diagram.
I've tried to delete and recreate the spatial index for the PipelineLine and for the PipelineSubnetLine but the error is still there.
I'm working on Gas and Pipeline Utility Network Foundation v2, with ArcGIS Pro 3.1.3.
Any ideas? Thanks in advance