To be warning someone highlights our ability to be aware of difficulty and danger, either to others or to hidden parts of our personality.
The circumstances of the dream will clarifv this.
To receive a written warning indicates we may be behaving badly.
3- A warning in this case can actually be showing us the way toward being a more intuitive person. Our intuition can be trusted we should use it accordingly. [1]
A feeling or fear of a threat (physical, emotional, or mental).
The idea of proceeding cautiously with a particular decision or course of action in your real life.
See also: Threat, Future, Telling on Someone [2]