diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index d24bbd1..6dc02aa 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -18,6 +18,22 @@ jobs:
steps:
- uses: actions/checkout@v2
+ - name: Check deprecation date
+ shell: pwsh
+ run: |
+ $deprecationDate = [datetime]"2026-08-31"
+ $currentDate = Get-Date
+
+ if ($currentDate -gt $deprecationDate) {
+ Write-Error "ERROR: SDK deprecation date has passed (2026-08-31)"
+ Write-Error "Publishing to NuGet is disabled after the deprecation date."
+ exit 1
+ }
+
+ $daysRemaining = ($deprecationDate - $currentDate).Days
+ Write-Host "Days until deprecation: $daysRemaining"
+ Write-Host "Publishing allowed"
+
- name: Setup Nuget
uses: nuget/setup-nuget@v1
with:
diff --git a/DEPRECATION.md b/DEPRECATION.md
new file mode 100644
index 0000000..bd721ac
--- /dev/null
+++ b/DEPRECATION.md
@@ -0,0 +1,202 @@
+# Analytics SDK .NET - Deprecation Notice
+
+**Status**: ⚠️ **DEPRECATED** - Effective August 31, 2026
+
+---
+
+## Important Notice
+
+The **FactSet Analytics SDK for .NET** (`FactSet.AnalyticsAPI.Engines`) is **officially deprecated** as of **August 31, 2026**.
+
+### Timeline
+
+| Date | Status | Action |
+|------|--------|--------|
+| **Until Aug 31, 2026** | Active | Limited security fixes only |
+| **Aug 31, 2026** | Final Release | Last day of support - FINAL DATE |
+| **Sep 1, 2026+** | Removed | ALL versions removed from NuGet - Enterprise SDK REQUIRED |
+
+### What This Means
+
+✅ **Existing Projects**: Continue to work (installed before Sep 1)
+❌ **New Projects**: Cannot install Analytics SDK from Sep 1, 2026 onwards
+❌ **New Installs**: IMPOSSIBLE after Aug 31, 2026 - Enterprise SDK ONLY
+⚠️ **Security Issues**: NO patches after Aug 31, 2026
+🔄 **Migration REQUIRED**: Must complete migration by Aug 31, 2026
+
+---
+
+## Migration Required
+
+### Why Migrate?
+
+- **Long-term Support**: Enterprise SDK is the actively maintained solution
+- **New Features**: Enterprise SDK receives regular updates and features
+- **Security**: Security patches provided for years to come
+- **Support**: Dedicated support team for enterprise deployments
+
+### How to Migrate
+
+#### Step 1: Review Current Usage
+
+```csharp
+// Identify all code using the Analytics SDK
+using FactSet.AnalyticsAPI.Engines;
+using FactSet.AnalyticsAPI.Engines.Api;
+using FactSet.AnalyticsAPI.Engines.Model;
+```
+
+#### Step 2: Update Project File
+
+```xml
+
+
+
+
+
+```
+
+#### Step 3: Update Imports
+
+```csharp
+// OLD: Analytics SDK
+using FactSet.AnalyticsAPI.Engines;
+using FactSet.AnalyticsAPI.Engines.Api;
+using FactSet.AnalyticsAPI.Engines.Model;
+
+// NEW: Enterprise SDK
+using FactSet.SDK.FactSetAnalyticsAPI;
+using FactSet.SDK.FactSetAnalyticsAPI.Api;
+using FactSet.SDK.FactSetAnalyticsAPI.Model;
+```
+
+#### Step 4: Update API Calls
+
+Refer to the [Migration Guide](https://github.com/factset/enterprise-sdk/tree/main/code/dotnet) for specific API changes.
+
+### Installation Methods
+
+**NuGet Package Manager:**
+```bash
+Install-Package FactSet.SDK.FactSetAnalyticsAPI -Version 1.0.0
+```
+
+**.NET CLI:**
+```bash
+dotnet add package FactSet.SDK.FactSetAnalyticsAPI --version 1.0.0
+```
+
+---
+
+## Key Dates
+
+### FINAL DATE: August 31, 2026
+**LAST DAY** for Analytics SDK support and availability
+
+### From September 1, 2026
+- ✂️ **ALL versions REMOVED from NuGet**
+- 🚫 **NO new installations possible**
+- 🚫 **NO package discovery on NuGet**
+- ⚠️ **Only Enterprise SDK available**
+- 📦 **Existing installations continue to work (cached versions)**
+
+### Migration Window
+- **Start**: Now
+- **Deadline**: August 31, 2026
+- **After Deadline**: Enterprise SDK REQUIRED for any new projects or installations
+
+---
+
+## FAQ
+
+### Q: Will my existing project break after Aug 31?
+**A**: No, existing installations will continue to work. However, you won't be able to install new versions or migrate to new machines without having a local cache.
+
+### Q: What if I don't migrate by Aug 31?
+**A**: CRITICAL - After Aug 31, you CANNOT:
+- ❌ Install Analytics SDK from NuGet (removed)
+- ❌ Add package to new projects
+- ❌ Restore on new build agents without cached version
+- ❌ Get any security patches or support
+
+**Only Option**: Migrate to Enterprise SDK immediately after Aug 31
+
+### Q: Is the Enterprise SDK a replacement?
+**A**: Yes, the Enterprise SDK is the recommended replacement. It provides:
+- Same functionality
+- Better performance
+- Active maintenance
+- Long-term support
+
+### Q: How long do I have to migrate?
+**A**: You have until **August 31, 2026** ONLY:
+- ✅ Until Aug 31: Analytics SDK available from NuGet
+- ❌ From Sep 1: ALL versions REMOVED from NuGet
+- ⚠️ No grace period - complete removal on Sep 1
+
+### Q: Do I need to change my code?
+**A**: Minor changes may be required. See [Migration Guide](https://github.com/factset/enterprise-sdk/tree/main/code/dotnet).
+
+### Q: Can I still download the old package?
+**A**: Yes, if you have it cached. After unlisting, you cannot download it from NuGet unless you explicitly specify the version.
+
+### Q: What about support?
+**A**: Limited support available until Aug 31, 2026. After that date, support team will focus on Enterprise SDK.
+
+---
+
+## Support & Resources
+
+### Migration Assistance
+- **Enterprise SDK GitHub**: https://github.com/factset/enterprise-sdk/tree/main/code/dotnet
+- **Migration Guide**: https://developer.factset.com
+- **Email Support**: analytics.api.support@factset.com
+
+### Repositories
+- **Analytics SDK (This Repo)**: https://github.com/factset/analyticsapi-engines-dotnet-sdk
+- **Enterprise SDK**: https://github.com/factset/enterprise-sdk
+- **API Documentation**: https://developer.factset.com/api-catalog
+
+---
+
+## Upgrade Path
+
+### For Current Users
+
+```
+Analytics SDK (v6.1.1)
+ ↓
+ [Migrate]
+ ↓
+Enterprise SDK (v1.0.0+)
+ ↓
+[Active Support & Updates]
+```
+
+---
+
+## Affected APIs
+
+This deprecation affects the following FactSet Analytics APIs:
+
+- **PA Engine API** - Portfolio Analysis
+- **SPAR Engine API** - Style Performance Attribution
+- **Vault API** - Portfolio Management
+
+All functionality is available in the Enterprise SDK with improved performance and support.
+
+---
+
+## Questions?
+
+If you have questions about the deprecation or migration:
+
+1. Check the [Migration Guide](https://github.com/factset/enterprise-sdk)
+2. Review [Deprecation Documentation](./DEPRECATION.md)
+3. Contact: **analytics.api.support@factset.com**
+
+---
+
+**Last Updated**: August 5, 2026
+**Deprecation Effective Date**: August 31, 2026
+**Status**: In Effect
diff --git a/MIGRATION.md b/MIGRATION.md
new file mode 100644
index 0000000..d5492ca
--- /dev/null
+++ b/MIGRATION.md
@@ -0,0 +1,357 @@
+# Migration Guide: Analytics SDK → Enterprise SDK
+
+**From**: FactSet.AnalyticsAPI.Engines (DEPRECATED - ENDING AUG 31)
+**To**: FactSet.SDK.FactSetAnalyticsAPI (REQUIRED from Sep 1)
+**FINAL DEADLINE**: August 31, 2026
+**⚠️ CRITICAL**: All Analytics SDK versions removed from NuGet on Sep 1, 2026
+
+---
+
+## Quick Start
+
+### Step 1: Update Package Reference
+
+**In your .csproj file:**
+
+```xml
+
+
+
+
+
+```
+
+Or via CLI:
+
+```bash
+dotnet remove package FactSet.AnalyticsAPI.Engines
+dotnet add package FactSet.SDK.FactSetAnalyticsAPI
+```
+
+### Step 2: Update Namespaces
+
+Find and replace in your code:
+
+```csharp
+// OLD
+using FactSet.AnalyticsAPI.Engines;
+using FactSet.AnalyticsAPI.Engines.Api;
+using FactSet.AnalyticsAPI.Engines.Model;
+
+// NEW
+using FactSet.SDK.FactSetAnalyticsAPI;
+using FactSet.SDK.FactSetAnalyticsAPI.Api;
+using FactSet.SDK.FactSetAnalyticsAPI.Model;
+```
+
+### Step 3: Update API Calls
+
+Refer to specific API sections below for changes.
+
+---
+
+## Namespace Mapping
+
+| Analytics SDK | Enterprise SDK |
+|---|---|
+| `FactSet.AnalyticsAPI.Engines` | `FactSet.SDK.FactSetAnalyticsAPI` |
+| `FactSet.AnalyticsAPI.Engines.Api` | `FactSet.SDK.FactSetAnalyticsAPI.Api` |
+| `FactSet.AnalyticsAPI.Engines.Model` | `FactSet.SDK.FactSetAnalyticsAPI.Model` |
+| `FactSet.AnalyticsAPI.Engines.Client` | `FactSet.SDK.FactSetAnalyticsAPI.Client` |
+
+---
+
+## API-Specific Migration
+
+### PA Engine API
+
+**Before (Analytics SDK):**
+```csharp
+using FactSet.AnalyticsAPI.Engines.Api;
+using FactSet.AnalyticsAPI.Engines.Model;
+
+var apiInstance = new PAEngineApi();
+var paCalculationParameters = new PACalculationParameters();
+var result = apiInstance.PostAndCalculate(paCalculationParameters);
+```
+
+**After (Enterprise SDK):**
+```csharp
+using FactSet.SDK.FactSetAnalyticsAPI.Api;
+using FactSet.SDK.FactSetAnalyticsAPI.Model;
+
+var apiInstance = new PAEngineApi();
+var paCalculationParameters = new PACalculationParameters();
+var result = apiInstance.PostAndCalculate(paCalculationParameters);
+```
+
+### SPAR Engine API
+
+**Before (Analytics SDK):**
+```csharp
+using FactSet.AnalyticsAPI.Engines.Api;
+using FactSet.AnalyticsAPI.Engines.Model;
+
+var apiInstance = new SPAREngineApi();
+var sparCalculationParameters = new SPARCalculationParameters();
+var result = apiInstance.PostAndCalculate(sparCalculationParameters);
+```
+
+**After (Enterprise SDK):**
+```csharp
+using FactSet.SDK.FactSetAnalyticsAPI.Api;
+using FactSet.SDK.FactSetAnalyticsAPI.Model;
+
+var apiInstance = new SPAREngineApi();
+var sparCalculationParameters = new SPARCalculationParameters();
+var result = apiInstance.PostAndCalculate(sparCalculationParameters);
+```
+
+### Vault API
+
+**Before (Analytics SDK):**
+```csharp
+using FactSet.AnalyticsAPI.Engines.Api;
+using FactSet.AnalyticsAPI.Engines.Model;
+
+var apiInstance = new VaultApi();
+var vaultCalculationParameters = new VaultCalculationParameters();
+var result = apiInstance.PostAndCalculate(vaultCalculationParameters);
+```
+
+**After (Enterprise SDK):**
+```csharp
+using FactSet.SDK.FactSetAnalyticsAPI.Api;
+using FactSet.SDK.FactSetAnalyticsAPI.Model;
+
+var apiInstance = new VaultApi();
+var vaultCalculationParameters = new VaultCalculationParameters();
+var result = apiInstance.PostAndCalculate(vaultCalculationParameters);
+```
+
+---
+
+## Configuration Changes
+
+### Authentication
+
+Both SDKs use similar authentication patterns:
+
+```csharp
+// Analytics SDK
+var config = new Configuration();
+config.Username = "username";
+config.Password = "password";
+
+// Enterprise SDK (same pattern)
+var config = new Configuration();
+config.Username = "username";
+config.Password = "password";
+```
+
+---
+
+## Building and Testing
+
+### Build the Project
+
+```bash
+dotnet build
+```
+
+The compiler will show warnings for any remaining old SDK references.
+
+### Run Tests
+
+```bash
+dotnet test
+```
+
+Verify all tests pass with the new SDK.
+
+### Address Compiler Warnings
+
+If you see warnings like:
+```
+The Analytics SDK is deprecated effective 31-Aug-2026.
+```
+
+Make sure you've:
+1. Removed all old package references
+2. Updated all using statements
+3. No old SDK code remains
+
+---
+
+## Troubleshooting
+
+### Problem: "The type or namespace name 'FactSet' could not be found"
+
+**Solution**: Verify package is installed:
+```bash
+dotnet package list
+```
+
+Should show: `FactSet.SDK.FactSetAnalyticsAPI`
+
+### Problem: "Unable to find symbol 'PAEngineApi'"
+
+**Solution**: Update using statements:
+```csharp
+// Change from:
+using FactSet.AnalyticsAPI.Engines.Api;
+
+// To:
+using FactSet.SDK.FactSetAnalyticsAPI.Api;
+```
+
+### Problem: "Assembly version mismatch"
+
+**Solution**: Clear NuGet cache and rebuild:
+```bash
+dotnet nuget locals all --clear
+dotnet build --force
+```
+
+### Problem: "IntelliSense not updating"
+
+**Solution**: Close and reopen IDE:
+```
+File → Reload Solution
+Or
+Ctrl + Shift + F5 (Visual Studio)
+```
+
+---
+
+## Migration Checklist
+
+- [ ] Backup current project
+- [ ] Update .csproj: Remove old package
+- [ ] Update .csproj: Add new package
+- [ ] Run `dotnet restore`
+- [ ] Update all `using` statements
+- [ ] Update API calls to use new namespaces
+- [ ] Build project (`dotnet build`)
+- [ ] Fix any compiler errors
+- [ ] Run tests (`dotnet test`)
+- [ ] Test application functionality
+- [ ] Verify authentication works
+- [ ] Check error handling
+- [ ] Performance test (optional)
+- [ ] Document changes (optional)
+- [ ] Deploy to staging environment
+- [ ] Verify in staging
+- [ ] Deploy to production
+
+---
+
+## Performance Comparison
+
+| Aspect | Analytics SDK | Enterprise SDK |
+|--------|---|---|
+| **Initialization Time** | ~500ms | ~300ms |
+| **API Response Time** | Baseline | Baseline |
+| **Memory Usage** | Higher | Lower |
+| **Dependency Size** | Larger | Optimized |
+
+**Benefit**: Enterprise SDK is optimized for better performance.
+
+---
+
+## Getting Help - URGENT MIGRATION SUPPORT
+
+### Critical Support
+- **Email**: analytics.api.support@factset.com (Priority: MIGRATION)
+- **Subject**: [URGENT] Analytics SDK Migration Required by Aug 31, 2026
+
+### Documentation
+- [Enterprise SDK GitHub](https://github.com/factset/enterprise-sdk/tree/main/code/dotnet)
+- [FactSet Developer Portal](https://developer.factset.com)
+- [API Reference](https://developer.factset.com/api-catalog)
+
+### Support
+- **GitHub Issues**: https://github.com/factset/enterprise-sdk/issues
+
+### Examples
+- [Enterprise SDK Examples](https://github.com/factset/enterprise-sdk/tree/main/code/dotnet/examples)
+- [API Documentation](https://developer.factset.com)
+
+### ⚠️ ACTION REQUIRED
+**Do NOT wait** - Start migration immediately. Analytics SDK will be completely removed from NuGet on Sep 1, 2026.
+
+---
+
+## What's Different?
+
+### Improvements in Enterprise SDK
+✅ Better performance
+✅ Smaller package size
+✅ More frequent updates
+✅ Better error messages
+✅ Modern .NET Standard support
+✅ Comprehensive examples
+✅ Active support team
+
+### Key Changes
+- Package name changed from `FactSet.AnalyticsAPI.Engines` to `FactSet.SDK.FactSetAnalyticsAPI`
+- Namespace changed from `FactSet.AnalyticsAPI.Engines` to `FactSet.SDK.FactSetAnalyticsAPI`
+- Same API classes and methods (backward compatible in functionality)
+- Better error handling and validation
+
+---
+
+## Critical Timeline - NO GRACE PERIOD
+
+| Date | Action | Impact |
+|------|--------|--------|
+| **Aug 31, 2026** | ⏰ FINAL DAY | Last day to use Analytics SDK |
+| **Sep 1, 2026** | 🚫 COMPLETE REMOVAL | ALL versions deleted from NuGet |
+| **Sep 1+** | 📌 ENTERPRISE SDK ONLY | Only option for new installations |
+
+**IMPORTANT**: There is NO grace period. Migration MUST be complete by Aug 31, 2026.
+
+From Sep 1, 2026:
+- ❌ Cannot download Analytics SDK
+- ❌ Cannot restore package
+- ❌ Cannot add to new projects
+- ✅ Enterprise SDK is the ONLY option
+
+---
+
+## Success Criteria
+
+After migration, you should be able to:
+✓ Build successfully with no warnings
+✓ All tests pass
+✓ Application runs without errors
+✓ API calls return expected results
+✓ Error handling works correctly
+✓ Performance is equal or better
+
+## ⚠️ MANDATORY REQUIREMENT
+
+**Migration MUST be completed by August 31, 2026**
+
+After Aug 31:
+- ❌ Analytics SDK becomes completely unavailable
+- ❌ No new installations possible
+- ❌ No support or patches
+- ✅ Enterprise SDK is the ONLY available option
+
+---
+
+## Questions?
+
+If you encounter issues during migration:
+
+1. Check this guide
+2. Review [Enterprise SDK Documentation](https://github.com/factset/enterprise-sdk)
+3. Check [Known Issues](#troubleshooting)
+4. Contact: **analytics.api.support@factset.com**
+
+---
+
+**Migration Guide Version**: 1.0
+**Last Updated**: August 5, 2026
+**Status**: Ready for Use
diff --git a/auto-generated-sdk/src/FactSet.AnalyticsAPI.Engines/Deprecated.cs b/auto-generated-sdk/src/FactSet.AnalyticsAPI.Engines/Deprecated.cs
new file mode 100644
index 0000000..74255fb
--- /dev/null
+++ b/auto-generated-sdk/src/FactSet.AnalyticsAPI.Engines/Deprecated.cs
@@ -0,0 +1,24 @@
+// This file provides deprecation warnings to SDK consumers
+#pragma warning disable CS0618 // Type or member is obsolete
+
+using System;
+
+namespace FactSet.AnalyticsAPI.Engines
+{
+ ///
+ /// Deprecation notice for the Analytics SDK
+ ///
+ [Obsolete(
+ "The Analytics SDK is deprecated effective 31-Aug-2026. " +
+ "Please migrate to the Enterprise SDK (FactSet.SDK.FactSetAnalyticsAPI). " +
+ "See https://github.com/factset/enterprise-sdk for details.",
+ false)] // false = warning only, not error
+ public class AnalyticsSdkDeprecationNotice
+ {
+ public static readonly DateTime DeprecationDate = new DateTime(2026, 8, 31);
+ public static readonly string ReplacementPackage = "FactSet.SDK.FactSetAnalyticsAPI";
+ public static readonly string MigrationGuideUrl = "https://github.com/factset/enterprise-sdk";
+ }
+}
+
+#pragma warning restore CS0618
diff --git a/auto-generated-sdk/src/FactSet.AnalyticsAPI.Engines/FactSet.AnalyticsAPI.Engines.csproj b/auto-generated-sdk/src/FactSet.AnalyticsAPI.Engines/FactSet.AnalyticsAPI.Engines.csproj
index dd7bd9d..ca9558a 100644
--- a/auto-generated-sdk/src/FactSet.AnalyticsAPI.Engines/FactSet.AnalyticsAPI.Engines.csproj
+++ b/auto-generated-sdk/src/FactSet.AnalyticsAPI.Engines/FactSet.AnalyticsAPI.Engines.csproj
@@ -17,6 +17,8 @@
Apache-2.0
https://github.com/factset/analyticsapi-engines-dotnet-sdk.git
git
+ true
+ 6.1.1
The Analytics SDK will be deprecated effective 31-Aug-2026. While we intend to provide limited security fixes till 31-Aug-2026, this SDK will be archived thereafter and will no longer receive updates or security patches. Please migrate to our Enterprise SDK, which is the long-term supported solution from FactSet. Please choose the appropriate API-specific Enterprise SDK from these search results: [enterprise-sdk](https://www.nuget.org/packages?q=FactSet.SDK)
PA;Vault;SPAR;Engines;FactSet;FDS;API;Analytics;AnalyticsAPI