I have a set of line segments and a group of grids that I would like to summarize within for each line feature class. When trying to script multiple instances of arcpy.SummarizeWithin it fails with ERROR 999999: Something unexpected caused the tool to fail. I can comment out the successful one and run the script again and it will summarize the next fine. It is as if I can only use the SummarizeWithin tool once per script.
ArcGIS Pro 2.5
Sounds like you have identified a software defect. I would encourage you to log an issue with esri support. Sounds like you have a good workflow for them to recreate the issue.
Have had this happen now with multiple data sets - this one is summarizing attributes of points inside of polygons - so, I guess my question is, "is this a known bug?" - I will turn it in to Esri Support, but this has been going on awhile and I am at v. 2.6. I have had this issue at least since 2.5.
I have some old workflows that we did in 2.4 where this wasn't broken.
Anyone else having this? If you CAN make it work, let us know the secret!
Anyone following this - here is what I discovered: you must have the "read" data and the "analyzed data" be in the same form/format. As long as they are the same, it will work. I will submit this as a bug, but in reading the error message suggestions that I found in searching this, I happened upon something that pushed me to try this. FGDB<>FGDB works. SDE in SQLServer<>SDE in SQLServer works. - Source/target mixtures such as FGDB>SDE in SQL Server or the reverse will fail.