I needed to connect two points - one being an auto theft location and the other the recovery location. I had both feature in a feature class linked by a case number. Point to line did not work in Pro but it does in ArcMap.

[ChrisJensen]

Pro gave an error of "2 points are required" I'm pretty sure it did not work because there was not a recovery point for every theft point.  ArcMap must skip creating a line in this case while Pro fails.  Is there a better way to create a line connecting two points?

[MichaelVolz]

This seems to me like an ArcPro equivalency issue where it does not handle your scenario as well in Pro compared to ArcMap.  I would create an incident with ESRI tech support to see if they can replicate this issue and consider it a bug as it seems like the functionality is better in ArcMap since you get some results as opposed to the tool failing to run.

[Robert_LeClair · Accepted solution]

Are you using the Sort_Field parameter when completing the GP tool parameters?

[ChrisJensen]

Yes, I had that set and when I tried it again today it worked. 

Problem solved.

I assume the point to line tool is the best way to do this?

[Robert_LeClair]

Yes, it will create the lines between the points based on unique ID's from the LINE_FIELD