Safety & Exceptions

Failures & Exceptions

Establish defined system behavior for conditions that cannot proceed normally.

Protocol Family: Safety
Status: Published
Version: 1.0
Effective Date: 2026-08-12
Related Department: QRProtocol.us
Scope: All failure, restriction and exception conditions in governed QR interactions.
Purpose: Establish defined system behavior for conditions that cannot proceed normally.
Dependencies: operating-sequence, state-control

Failure is part of the protocol.

Controlled State Requirement

Failure must produce a controlled state, not an undefined state.

A governed system must know what to do when something goes wrong. QR Protocol therefore establishes procedures for conditions including:

01Unknown QR objects
02Invalid states
03Expired conditions
04Suspended objects
05Revoked objects
06Unauthorized actions
07Routing failures
08Physical tampering
09Failed confirmation

An action may be stopped, restricted, rerouted, escalated, recovered, placed into an exception state or referred for authorized intervention. The important requirement is that the system does something defined.

Definition

Failure must produce a controlled state, not an undefined state.

Governing Rule

The important requirement is that the system does something defined.

Exceptions

An action may be stopped, restricted, rerouted, escalated, recovered, placed into an exception state or referred for authorized intervention.

What it governs

— System behavior when a condition cannot proceed normally
— Classification of failure conditions
— Escalation and authorized intervention

Permitted

— Stopping, restricting, rerouting, escalating or recovering the interaction
— Placing the interaction into a defined exception state

Not permitted

— Undefined behavior on failure
— Silent continuation past a failed condition
— Publishing a remediation behavior that source material does not establish

When the condition passes: The exception is handled through the defined controlled outcome.
When the condition fails: Where no defined outcome exists, the condition is identified as an unresolved failure class and escalated for Protocol review.
Department performing the operation: Protocol defines the failure classes. The department holding jurisdiction over the failed operation performs the remediation.
Record / evidence required: The failure, its class and its outcome must be recorded where required.
Where the operational record lives: QRCodex.us.