Spreadsheet Failure ModeManual Workflow
Root Operational Bottleneck
Valid department and cost-center combinations live in a setup guide and an error-correction sheet, so invalid pairs are caught only after the entry has posted.
Control Hazard & Audit Exposure
Expense is booked to combinations that do not exist in the segment table, and the correction sheet becomes the real chart of accounts.
Deterministic Software ReplacementClient-Owned Architecture
Deterministic GL Guardrail & Real-Time Booking Prevention
GL guardrail that validates every segment combination against the current cross-validation table at entry time and rejects the post when the pair is invalid.
Continuous Assertion Rule
Combination assertion: a journal line cannot post unless every segment pair is present on the active cross-validation table for that date.