The compensation you may be entitled to depends on the type of professional, nature of the claim, and extent of the damages.  In professional malpractice cases resulting in personal injuries, victims are typically entitled to monetary compensation for their damages.  In other types of professional malpractice claims, victims may be entitled to breach of contract remedies such as expectancy damages (get what you should have if the contract was properly performed), consequential damages (recover damages for the errors), and specific performance (obtain the specific end-result such as a unique item or real estate parcel).