GAAP that is Generally Accepted Accounting Principles encompass the conventions, rules and processes necessary to explain accepted accounting practice at an exact time........generally accepted accounting principles comprise not only broad guidelines of general application, but also explained procedures and practices.
The word 'principles' is utilized to mean a "general law or rule adopted or professed like a guide to action, a settled ground or origin of conduct or practice". You will notice this definition illustrates a principle as a general law or rule which is to be utilized as a guide to action. It implies that accounting principles do not prescribe exactly how each detailed event occurring in business should be recorded. Thus, there are some matters in accounting practice that may be different from one company to the other.
Accounting principles are manmade. They are accepted as they are believed to be helpful. The general acceptance of an accounting principle or for such matter or like any principle generally depends upon how well it meets the three criteria of relevance, feasibility and objectivity. A principle is related to the extent that it results in meaningful or helpful information to those who require knowing about a specific business. A principle is objective to the extent such the information is not influenced through the personal bias or judgment of those who furnished it. Objectivity connotes dependability or trustworthiness that also means by the correctness of the information reported can be verified. The principle is reasonable to the extent such can be implemented without excessive complexity or cost.