FTB-C000040 / Implementation concept

No-Imputation Missing-Session Policy

A policy that blocks or pauses calculation instead of converting a missing required session into a zero observation.

Also known asMissing-session refusalNo silent zero

Advanced 12 linked topicsPublished

Definitions

In plain terms

No data and a measured zero are different facts. This policy refuses to update the indicator until the missing session is resolved.

Technical

When a required sequence member lacks valid evidence at the cutoff, the processor emits an incomplete state and performs no ordinary recursive update for that member or dependent suffix.

Scope

This policy does not reject a validated session whose measured input is genuinely zero; it rejects absence disguised as measurement.

Examples

  • A missing breadth file pauses the EMA path, while a validated session with equal advances and declines updates it with Net Advances zero.

Common misconceptions

  • Zero is not a neutral substitute for missing evidence in a recursive calculation.

Concept relationships

Prerequisites

Contrasts with

Where this concept is used

Tutorials planned

These catalogued topics use this concept, but their complete build has not shipped yet.

  • D01-F04-A01 Important
  • D04-F01-A03 Important
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  • D07-F02-A04 Important

Evidence and governance

  1. Fintech Builder Glossary Definition Contract The Fintech Builder · internal governed contract

    Supports: short definition, technical definition, variant distinction

    Limits: Defines governed platform behavior rather than claiming these policies are universally prescribed by external McClellan methodology.

Reviewed by
Last reviewed
2026-07-26
Next review
2027-07-26
Record status
published
Written by

Fintech engineer building market-data and financial systems, and the author of every article, glossary record, and reference implementation on The Fintech Builder.