Memorandum of association is the most important document of the company. It is the charter of the company, which defines the objects of the company's formation and the utmost possible scope of its operations beyond which its actions cannot go.
Authorized share capital is also known as Registered capital. The authorized capital of a company is the maximum amount of share capital that the company is authorized by its constitutional documents to issue to shareholders.
The maximum amount with which a company is registered is called