After an LLC is organized, certain modifications may become necessary and amendments may need to be registered with the Corporation Commission through the phases of its lifespan. Examples of modifications that will require registration of an amendment are: changing the company´s name; additions and withdrawals of members; modifying the number of managers.

Amendments are not legally effective until the pertinent documentation is actually filed. Arizona statutes require copies of amendments to be kept in the company´s records book.

Alterations to LLC names and additions or withdrawals of members require that Articles of Amendment be filed and then notice published. If membership composition is altered, the operating agreement should be reviewed, and probably re-drafted to suit the needs of the remaining members.

Modifications to the statutory agent, the agent´s address or members´ addresses require a Statement of Change to be registered with the ACC at a nominal fee with no publication requirements.

If erroneous statements were made in the Articles of Organization, corrections can be made by filing Articles of Amendment. However, it is more desirable to merely file Articles of Correction, being that the filing fee is less, and because Articles of Correction are not required to be published. Articles of Correction can be utilized instead of amending the articles if an error contained in a document "does not materially alter a substantive provision in the document". (See ARS 29-637).