I recently discovered that a customer had made an error in naming the locations of in-cavity temperature sensors. The rules are these:
If the plastic contacts the sensor or the sensor is just behind the cavity wall use one of the in-cavity locations:
Post Gate, Mid Cavity or End of Cavity. Then add an id for each cavity in multi-cavity applications.
For in-cavity sensors pick a location name relative to the flow path.
If the sensors are on the mold steel elsewhere you can use Parting Line or Mold Surface.