Lease abstraction errors are consistent and predictable, and each one maps to a specific financial consequence. Knowing the common failure modes is how a CRE team builds a quality process — or evaluates whether an automated one is reliable.
Recording Only Year 1 Rent
The most common shortcut is recording the Year 1 rent and the escalation rate ("$50,000, 3% annually") instead of the full schedule. This loses the actual year-by-year amounts, forces anyone using the abstract to recompute, and hides escalation math errors. A 10-year lease has 10 distinct annual rent amounts, and each belongs in the abstract explicitly.
Missing the Cumulative CAM Cap
Recording "5% CAM cap" without capturing whether it's cumulative or non-cumulative loses the term that actually determines cost. A cumulative cap can produce rent spikes a non-cumulative cap never would, and over a 10-year term the difference is meaningful dollars. The application method is not optional detail — it's the substance of the cap.
Ignoring Amendments and Blank Fields
Two more recurring errors: failing to carry amended terms through (the abstract reflects the original lease, not the current effective terms after amendments), and leaving fields silently blank when a term wasn't found. A blank field looks identical to a zero — far better to flag explicitly that a field was not located, so the gap is visible rather than mistaken for a real value. The AI agent addresses all four — full schedules, cap structure, amendment reconciliation, and explicit flagging. It's demonstrated at omnionlinestrategies.com/ai-agent-cre-lease-abstraction.