DefinedTerm · integration
Idempotency key
A stable identifier attached to a request so that repeating it has no additional effect. In ledger integration the key is derived from the chain’s own identifiers, because any sequence the integration maintains will not survive a restart.
Common causes
Keys generated by the caller at send time produce duplicates on retry, which in a financial integration is a duplicate posting.
What good looks like
A key derived from immutable source identifiers, a uniqueness constraint at the write, and a re-run test over an already-processed window.
Term set: the build vocabulary. Capital-markets terms are defined on gda.group; agent-economy terms on flashygroup.com. One term, one home.