The controller misjudged the situation which led to a separation minimum infringement. The radar systems issued a warning to the controller to alert him of the impeding confict. The controller can then correct the situation.
Examples - how to read
Examples explained
In these sections, you will find a variety of examples that are matching the behaviour described on the home page or in the general purpose navigator. Browse through the examples to get a feel how behaviour could be classified. Notice how seemingly innocent errors can lead to major disasters. And how blatant behaviour may have benign consequences, but should definitely NOT be tolerated. Remember that intent of the behaviour is the qualifying parameter for classification.