Image processing apparatus, method of controlling image processing apparatus, and storage medium

A method of controlling an image processing apparatus, the method comprising:

• communicating with an external apparatus via a universal serial bus (USB) device interface;
• determining whether a scanner exists;
• and
• performing control to, in a case where it is determined that the scanner does not exist, apply, as configuration information regarding the USB device interface, configuration information in which an Internet Printing Protocol (IPP) Over USB is set in a part of the configuration information in which a scanner I/F is set in a case where the scanner exists.

A non-transitory computer readable storage medium storing a program for causing an image processing apparatus to perform a method, the method comprising:

• communicating with an external apparatus via a universal serial bus (USB) device interface;
• determining whether a scanner exists;
• and
• performing control to, in a case where it is determined that the scanner does not exist, apply, as configuration information regarding the USB device interface, configuration information in which an Internet Printing Protocol (IPP) Over USB is set in a part of the configuration information in which a scanner I/F is set in a case where the scanner exists.