This transaction set enables borrowers and their representatives to submit residential mortgage loan applications to lenders. Typically initiated by a loan applicant, mortgage broker, or real estate professional, it is sent to a lending institution or mortgage company. The 201 is generally submitted in response to a loan inquiry or application invitation, or independently when an applicant is ready to formalize their borrowing request. Key segments structuring the application include the BGN (Beginning Segment), which establishes the application context and timing; the LRQ (Mortgage Characteristics Requested), which specifies the desired loan terms and property details; and the IN1 (Individual Identification), which captures applicant demographic and financial information necessary for underwriting evaluation.

Consider a scenario where Maria Garcia, a prospective homebuyer working with mortgage broker Pinnacle Lending Group, submits a 201 transaction to First National Bank to apply for a $350,000 mortgage. The transaction set captures Maria’s personal information through IN1 and IN2 segments, details about the property she intends to purchase through the NX1 and NX2 segments identifying its location, her desired loan characteristics through LRQ, her monthly housing and other expenses through PEX segments, her existing debts and financial accounts through CDA and FAA segments, and her employment history through the N1 loop. First National Bank receives the complete application data in a structured, machine-readable format that their loan processing system can automatically parse, validate, and route to the appropriate underwriter for review.