Common comparison error
Touching and crossing are not interchangeable in Discrete barrier monitoring; written equality and Barrier decide.
GlossaryPricing & settlement
Discrete barrier monitoring
A barrier is checked only at specified observation times or ticks, so moves between observations may not count.
Practical use
How to verify Discrete barrier monitoring
Read Discrete barrier monitoring together with Continuous barrier monitoring, Barrier, Expiry-only observation. The comparison must preserve the exact rule, value, state, and evidence described below.
A neutral example
With spot 100, Discrete barrier monitoring uses lower 95 and upper 105. A path touching exactly 105 tests equality, quote side, monitoring frequency, and Continuous barrier monitoring. This cannot be swapped with a neighboring term: for Discrete barrier monitoring, a move between scheduled observations may not count even when an external chart visibly crosses the level.
Evidence path
Where to verify Discrete barrier monitoring
Use the source that governs the exact contract, account, entity, or platform state. A general definition cannot replace current broker terms.