Loan verification information is exchanged between financial institutions and third-party verifiers to provide documented details about a borrower’s loan status and financial circumstances. The transaction set is typically sent by a loan servicer, employer, bank, or credit reporting agency in response to a verification request, usually as part of a loan application or modification process. Key segments include the BGN (Beginning Segment) which establishes the transaction context, the IN1 and IN2 segments which identify and structure the borrower’s individual information, and the API (Activity or Process Information) segment which organizes the detailed loan and financial data being verified. The document also uses N1 (Name), N3 (Address Information), and N4 (Geographic Location) segments to capture institutional and property information relevant to the verification.

When Community Bank receives a mortgage application from a borrower, it requests loan verification from the applicant’s current lender, First National Mortgage Company. First National responds with an X12 198 transaction that includes the borrower’s name and contact details, followed by loan activity information organized under the API segment—including property details through NX1 segments, monthly payment amounts via AMT segments, and current account status dates using DTP segments. If the applicant has stated income from employment, First National also includes AIN (Income) segments showing verified employment income. Community Bank receives this structured data electronically, extracts the verified information into its underwriting system, and uses it to validate the borrower’s stated financial obligations and employment history without requiring manual phone calls or paper document exchanges.