Employer Identification Number Field 01EINThis figure illustrates two Sections (2a and 2b) relating to the Employer Identification Number (EIN).• 2a shows the location to find the Employer Identification Number as described in the text. An arrow is pointing to Form 1065, item D.• 2b illustrates that if Form 1065 has no EIN entered, then a Form 4227, Intra-S.C. Reject or Routing Slip, must be completed and return sent to Entity Control with the action Other (explain) checkbox checked and Assign EIN written in the field under the Reason Other (explain).