Review request for Microsoft.DBforPostgreSQL to add public preview release of version 2026-01-01-preview

[nasc17]

ARM (Control Plane) API Specification Update Pull Request

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• New resource provider.
• New API version for an existing resource provider. (If API spec is not defined in TypeSpec, the PR should have been created in adherence to OpenAPI specs PR creation guidance).
• Update existing version for a new feature. (This is applicable only when you are revising a private preview API version.)
• Update existing version to fix OpenAPI spec quality issues in S360.
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  • edit this with your clarification

Due diligence checklist

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• I confirm this PR is modifying Azure Resource Manager (ARM) related specifications, and not data plane related specifications.
• I have reviewed following Resource Provider guidelines, including
  ARM resource provider contract and
  REST guidelines (estimated time: 4 hours).
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Additional information

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Introduce V20260101
Add network migration operation for servers

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[github-actions]

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[github-actions]

API Change Check

APIView identified API level changes in this PR and created the following API reviews

Language	API Review for Package
Swagger	Microsoft.DBforPostgreSQL
TypeSpec	Microsoft.DBforPostgreSQL
Go	sdk/resourcemanager/postgresql/armpostgresql
Python	azure-mgmt-postgresql
JavaScript	@azure/arm-postgresql-flexible
Java	com.azure.resourcemanager:azure-resourcemanager-postgresqlflexibleserver

[gary-x-li]

Please fill out the Purpose of this PR and Due diligence checklist sections.

Please fix the required checks:
Swagger Avocado
Swagger ModelValidation
Swagger PrettierCheck

[nasc17]

• Swagger Avocado

@gary-x-li

Swagger Avocado : we are using this bug to track pre-existing issue: #39199
But have previously received Avacado Approve to bypass until it can be addressed.

Addressed Swagger ModelValidation
Swagger PrettierCheck

[nasc17]

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[nasc17]

@gary-x-li change implemented

[nasc17]

Please can we bypass .Net validation @live1206

We are currently in progress with updates there for stable API: Azure/azure-sdk-for-net#54263