Moment 1 · Learning and mapping · fixed-width decode
Decoding the unreadable escrow driver record
The mortgage-servicing driver file is a classic fixed-width flat file: one 292-character line per loan, no delimiters, every field pinned to a column range that lives only in a legacy record layout. Onboarding read a year of these against the printed statements, recovered the column map, and learned the RESPA escrow skeleton on the right. This view shows the same header line twice, first as it arrives and then decoded, and wires each recovered column span to its driver field and on to the skeleton slot it supplies.
Represented data. This is a static concept mockup for review. The exemplar is one real record from the demo escrow driver fixture (loan 4400000000, a synthetic borrower on the servicer "Cornerstone Home Loans"). The column ranges are read verbatim from the fixture record layout. Confidence scores, the skeleton, and the layer model are illustrative stand-ins, not live Onboarding Engine output.
ExemplarAnnual escrow analysis statement · cornerstone-home-loans · artifact type escrow-analysis-statement · driver record type EH · pairing key loan_number
As receivedrecord type EH, 292 characters, fixed width, zero delimiters. Unreadable without the record layout.
EH4400000000Jones, Anthony 1684 Tanglewood Dr Raleigh NC276012026020120260201202702010006008150604182000000293178000009496130000007913400000072074000001582680000015410900000154104000000041640000000000000000000000000000003470000037265900000365252SHORTAGENONEN
As decodedthe onboarding parser recovers the column ranges and the zoned-decimal money format. Same 292 characters, now legible.
EH4400000000Jones, Anthony 1684 Tanglewood Dr Raleigh NC276012026020120260201202702010006008150604182000000293178000009496130000007913400000072074000001582680000015410900000154104000000041640000000000000000000000000000003470000037265900000365252SHORTAGENONEN
refinance-or-cross-sell-solicitationforbidden inside the RESPA disclosure region
Active trace (the shortage computation, the RESPA heart)
Learned mapping (column span to driver field to skeleton slot)
Money field, zoned-decimal decoded
L1 dynamic binding
Escrow is the most opaque legacy format in the Phase 1 set precisely because the driver is fixed width: the header line above carries twenty-eight fields with no delimiter to separate them, and every money field is zoned, eleven characters of a sign plus ten digits of cents with two implied decimal places, so 00000004164 is the shortage of 41.64. Extraction here is deterministic once the column layout is learned, which is why the confidence scores read high, but the value the visualizer adds is legibility: it turns an undocumented wall of digits into named, bound, RESPA-aware skeleton slots. The self-consistent arithmetic is visible in the decode itself, the required cushion of 1582.68 is two months of the new escrow of 791.34, and the shortage of 41.64 is that cushion less the lowest projected balance of 1541.04.