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Search Income Tax (ONESOURCE) Help and Support.

This article applies to:

  • Product: ONESOURCE Income Tax
  • Return type: 1065 Partnership
  • State: Illinois
  • Subject: e-file

IL1120B-2400-3 e-file error

This happens when a partner has an SSN but is classified as a C, S, P, A, N, or M on the Sch B-Partner Identification Page 2.

Error message

IL1120B-2400-3: If SchILB Line Section B Col B contains a C, S, P, A, N, or M, then the same occurrence of SchILB Line Section B Col C (SSN) must be blank.

Solution

  1. Go to
    Tax Forms
    States
    Illinois
    Sch B-Partner Identification
    Schedule B, Page 2, Sch B
    .
  2. Select
    Summary
    .
  3. Identify your partners or shareholders.
    1. Partner Type (B)
       can't have an SSN for C, S, P, A, or M Partners and must be blank.
    2. N Partners
       need to have an FEIN.
  4. Do a full recompute, then re-create the e-file.

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