An image processing apparatus, a method of controlling the same and a non-transitory computer readable recording medium are described in which it is possible to disable a particular one of the functions which are implemented using the same communication protocol. A multifunction peripheral (MFP) is capable of communicating with terminal devices. The MFP acquires a capability information request transmitted from the terminal device, returns a capability notification to the terminal device which has transmitted the capability information request, and determines the capabilities which is required by the function that is set to be disabled from among different functions. In this case, the MFP does not notify, as a supported capability, the required capability even if it can be handled by the MFP. Namely, the capability notification is returned such that this capability is not supported.