This contrasts with normal criminal law which generally only holds offenders responsible for their own actions, but under the common law of joint enterprise a person can be found guilty of another person's crime. This therefore means that the conviction may be seen as unfair and may lead to problems, for example a person serving a longer prison sentence than they should. This dispute arises particularly in the third type of joint enterprise where the principal commits a second criminal act, while participating in the first criminal act. The law states that because the secondary party was involved in crime A and anticipated crime B, they are also convicted of the same punishment as the principal, even if they did not participate in the second crime. This creates many debates in court, such as whether the second party should receive the same punishment as the principle if they themselves have not fulfilled their obligations.