Specifically, here's what they said:
A review of the information and documentation in your application indicates that your
duties and responsibilities in the positions stated in your application may not match the
lead statement and a substantial number of the duties under the listed 2281 – Computer
Network Technicians.
You have 30 calendar days from the date of this letter to provide additional information
or documentation to support that your application satisfies program criteria. Should the
program not receive additional information within this timeframe, your application will be
assessed based on the existing information on file which may lead to the refusal of your
application.