
Scunthorpe United's 2-0 victory over Newcastle United PL2 means that the Pilgrims cannot now finish outside the top two in Group D.
With Boreham Wood, Brackley Town, Braintree Town and Truro City also qualified, the final places will be taken by Tamworth or Rochdale, West Ham United PL2 or Woking and FC Halifax Town or Newcastle.
Quarter-final ties are scheduled to be played on Tuesday January 27.