6c37871c__11_CCP_Installment_Agreements__If_the_reason_box_states_
[And ...] account is full paid [Then ...] Verify TIN is correct on IAT file. Send Letter 4222 via ICS to taxpayer. Close modules on ICS Provide updated information to IAT administrator. [If the reason box states:] 
No FS2 BD Mods for Primary/Secondary
Internal Revenue Manual - 5.4.11 CCP Installment Agreements