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-rw-r--r--guide/src/entity_release.md6
1 files changed, 5 insertions, 1 deletions
diff --git a/guide/src/entity_release.md b/guide/src/entity_release.md
index 20b24719..8d2930d7 100644
--- a/guide/src/entity_release.md
+++ b/guide/src/entity_release.md
@@ -24,7 +24,11 @@
publicly available. Blank if only year is known.
- `release_year` (integer): year when this release was first made
publicly available; should match `release_date` if both are known.
-- `withdrawn_status` (string, controlled set):
+- `withdrawn_status` (optional, string, controlled set):
+- `withdrawn_date` (optional, string, ISO date format): when this release was withdrawn.
+ Blank if only year is known.
+- `withdrawn_year` (optional, integer): year when this release was withdrawn; should
+ match `withdrawn_date` if both are known.
- `ext_ids` (key/value object of string-to-string mappings): external
identifiers. At least an empty `ext_ids` object is always required for
release entities, so individual identifiers can be accessed directly.