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AWS general documentation change

Service: general · 2026-04-19 · Documentation low

File: general/latest/gr/opensearch-service.md

Summary

Updated service limits documentation for OpenSearch collections, clarifying limits for collections with unique KMS keys and adding a new limit for collections per collection group.

Security assessment

This change clarifies service limits and quota documentation. While it mentions KMS keys (a security feature), the change is about quota limits and resource management, not about addressing a security vulnerability or adding security guidance.

Diff

diff --git a/general/latest/gr/opensearch-service.md b/general/latest/gr/opensearch-service.md
index e4e46b485..bd8212c94 100644
--- a//general/latest/gr/opensearch-service.md
+++ b//general/latest/gr/opensearch-service.md
@@ -162 +162,2 @@ Collection tags |  50 | No |
-Collections with unique KMS keys |  Maximum OCU/2 | No | This limit depends on the maximum number of OCUs you set and how many OCUs are already in use.  
+Collections per collection group |  1,500 | No |  The maximum number of collections per collection group. The actual number of collections can be further limited by MaxOCUs based on the size of collections.  
+Collections with unique KMS keys (not in a collection group) |  Maximum OCU/2 | No | This limit only applies to collections that are not part of a collection group. It depends on the maximum number of OCUs you set and how many OCUs are already in use. Collections within a collection group have a separate limit of 1,500 collections per group, regardless of the number of unique KMS keys used.