Create container fails claiming no partition key kind has been provided while it has

[DigiBanks99]

Describe the bug
I'm not sure if this is more a Cosmos API issue or an emulator issue, but if I try to call my emulator instance with a create container request, I get a message that says I did not provide a partition key kind eventhough it was provided.

This happens with direct REST API calls and using the Microsoft.EntityFrameworkCore.Cosmos v 9.02 in C#.

To Reproduce

1. Create an http file or use any API tool to execute a REST request
2. Send the following request:

POST http://127.0.0.1:8081/dbs/database/colls HTTP/1.1
Authorization: redacted
x-ms-date: Tue, 11 Mar 2025 08:27:10 GMT
x-ms-cosmos-sdk-supportedcapabilities: 1
x-ms-activity-id: c9683ee6-4d29-4602-8587-91f675f140d9
Cache-Control: no-cache
Content-Type: application/text+json
x-ms-version: 2020-07-15
Accept: application/json

{
  "id":"User",
  "partitionKey":{
    "paths":["/id"],
    "kind":"MultiHash",
    "version":2
  }
}

3. Receive error: {"message":"partitionKey.kind is required in the request body"}

Expected behavior
The partition key needs to be supported or the documentation must describe the limitations of the partitionKey

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: macOS 15.3.1 (24D70)
• Browser: N/A
• Version: N/A
• SDK version: 3.46.1
• SDK language: C#

Additional context
I've noticed that if I replace the MultiHash value with Hash it works.

[rochaudhary]

Hi @DigiBanks99

Thanks for reporting this issue. This is happening because as of now, hierarchical partition keys (MultiHash kind partition key) are not supported on the V-Next emulator. However, we have a plan for adding support for hierarchical partition keys and would be releasing this out soon.