This directory tracks the well-known identifiers used in ACDP. Each registry is a Markdown table; entries are added via PR.
| Status | Meaning |
|---|
Proposed | Suggested in an open RFC or PR. Not yet merged. |
Provisional | Merged but not yet shipped in two interoperating implementations. |
Stable | Two interoperating implementations confirmed. Backwards-compatible additions only. |
Deprecated | Retained for archaeology. New implementations MUST NOT depend on it. |
- Context type identifiers are lowercase for standard types — snake_case historically, with hyphens permitted since 0.3.0 (
key-revocation, matching the custom-type <type> grammar ^[a-z][a-z0-9_-]*$); namespaced custom types use <namespace>:<type> (e.g. science:experiment-replication).
- Lifecycle event types are lowercase snake_case matching
^[a-z][a-z0-9_]*$.
- Error codes use lowercase snake_case.
- Locator scheme identifiers use dotted-namespace form (e.g.
kafka.offset).
- Experimental identifiers SHOULD use a vendor-prefixed reverse-domain name (e.g.
com.example.feature).