Information processing apparatus for executing processing in response to request from external device, control method of information processing apparatus, and storage medium

An information processing apparatus capable of communicating with an external device, the information processing apparatus comprising:

• a first processing unit;
• a second processing unit;
• a reception unit configured to receive a processing request for requesting processing to any of the first processing unit and the second processing unit from the external device;
• a generation unit configured to generate, if a processing request for requesting processing to the first processing unit is received from the external device, a first identifier for identifying the external device by the first processing unit and further generate a second identifier for identifying the external device by the second processing unit;
• a storage unit configured to store the first identifier and the second identifier generated by the generation unit in association with each other;
• and
• a transmission unit configured to transmit the first identifier generated by the generation unit if the first processing unit performs the processing in response to the received processing request,
• wherein, if the reception unit receives a processing request which is for requesting processing to the second processing unit and includes the first identifier, the second processing unit identifies the external device by the first and second identifiers stored in the storage unit and the first identifier included in the processing request.