ITS LITERALLY ACCEPTED
link also it is on the haki page
Inept Haki Users: Users of this class are only shown capable of activating the ability of Armament Haki through intense focus and effort. They can only increase the power or sharpness of their attacks, and likely their durability as well. They should, however, be capable of bypassing the effects of a Devil Fruit user's body upon successful activation. At best, a user can coat their body with invisible armor that can, for example, have a normal leg become durable enough to deflect strikes from harder material or sharp/bladed weapons.
This level of application is good enough to let the user ignore resistances from those with Devil Fruit powers.
Rudimentary Haki Users: Haki users of this level are capable of actively using the basic functions of this form of Haki as descibed above. They can coat their entire body with an invisible wall that increases defenses and attack power while subtly increasing range. T
hey can actively attack those with the ability to turn their physical body into other materials such as ice or smoke (typically Logia Devil Fruit Users), and mitigate the effects of Devil Fruit attacks. This invisible armor can further be extended to projectiles and weapons to increase their attack power. At best, a character may be capable of utilizing Busoshoku: Koka, an ability that allows the user to increase the hardness of their body to become even more durable than steel. However, most users of this class are only seen capable of using Koka on small parts of their body at a time (typically both fists and fore-arms at most).