Thank you @Robert_LeClair I am new to Topology so have been learning how to use this and found it very useful for future use also.

The issue I have with "Must not Dangle" is that it has generated around 450 point errors in my Line dataset. Looks like intersections are being detected also? The image below is not 4 separate lines, I have used the Pairwise Dissolve tool to create lines for each route rather than lots of individual segments as that is what I am required to output.

Any ideas?

Thanks