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Simon Moreno (simorenoh) merged 1 commit into from
Sep 1, 2026
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Cosmos: update changelog for release #48828

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12 changes: 3 additions & 9 deletions sdk/cosmos/azure-cosmos/CHANGELOG.md
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## Release History
> [!IMPORTANT]
> We strongly recommend that customers use at least version 4.16.3 of `azure-cosmos`.

### 4.16.4 (Unreleased)

#### Features Added

#### Breaking Changes
### 4.16.4 (2026-09-01)

#### Bugs Fixed
* Fixed regression with handling of v1 legacy containers when passing `{}` as a partition key. `{}` and `NonePartitionKeyValue` now both resolve to the `Undefined` effective partition key. See [PR 48422](https://github.com/Azure/azure-sdk-for-python/pull/48422)
* Fixed the same `TypeError` on system key (migrated) containers, where a missing partition key value resolves to `_Empty` instead of `Undefined`. It now maps to the minimum effective partition key. See [PR 48422](https://github.com/Azure/azure-sdk-for-python/pull/48422)
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#### Other Changes

### 4.16.3 (2026-07-29)

#### Bugs Fixed
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* Enhanced error logging by attaching endpoint information to exceptions during database account retrieval. See [PR 44484](https://github.com/Azure/azure-sdk-for-python/pull/44484)

### 4.15.0 (2026-02-19)
> [!IMPORTANT]
> We strongly recommend that customers use at least version 4.15.0 of `azure-cosmos`.

#### Features Added
* GA support of Per Partition Automatic Failover and AvailabilityStrategy features.
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