For a 2-point resection, which does not use least squares, make sure you turn the angle from the first point to the second point clockwise. Just a requirement.
For a resection with 3 or more points, TPC does a least squares solution. I don’t see anywhere that TPC reports the strength of the solution for you. We can certainly add that to our list. In the mean time, if you have a critical need for a report, you can do a Least Squares Network analysis and get a full report. You can just select the points involved and TPC will nicely generate a small LS Network with just the points you want. If you first protect the resection points first, they will come into the LS Network as the fixed points.