1. An image processing apparatus that has a plurality of functions and in which security policies are set in advance, comprising: a memory; a processor; a user interface configured to enable operation on the image processing apparatus; a verification unit configured to, when settings of the image processing apparatus, which influence the security policies set in advance, are changed via said user interface, verify whether the changed settings match the security policies set in advance; and a restraint unit configured to restrain operation of the image processing apparatus until said verification unit verifies that the changed settings match the security policies, wherein the verification unit and the restraint unit are implemented by the processor executing at least one program recording on the memory.