What does it meaning incarceration, in the dream?

Apart from a dream of occupation such as an officer of the law, the handcuffs denote rigid ties that are unbearable to the dreamer.

The officers naturally dream of their work a great many times.

If the dreamer breaks open the handcuffs or is released from them, the stigma of mental incarceration will be removed.... Psycho Dream Interpretation

Jail is the place where criminals go when they are awaiting trial and before the major incarceration of prison. You can be quite innocent of a crime and still be in jail. In this way, jail is symbolic of any powerful sense of restraint and limitation that keeps you from enjoying a sense of freedom.

If your dream takes place in jail, examine your life for a situation or limiting belief that is holding you back.... Complete Dictionary of Dreams