Common comparison error
Similar barrier names do not establish identical Barrier payoff, window, frequency, refund, or Observation window.
GlossaryPricing & settlement
Barrier
A target level used by touch, no-touch, in, out, or range-style contracts.
Practical use
How to verify Barrier
Read Barrier together with Lower barrier, Observation window, Upper barrier. The comparison must preserve the exact rule, value, state, and evidence described below.
A neutral example
A Barrier ticket settles from final price while Lower barrier monitors the full path. The example crosses a boundary and returns before expiry. The result is classified under Barrier because the numerical target must identify quote side, equality, observation period, and monitoring method.
Evidence path
Where to verify Barrier
Use the source that governs the exact contract, account, entity, or platform state. A general definition cannot replace current broker terms.