Remember, SOAP Web Services were the backbone of the NetSuite Integration. Fast forward today, using SOAP is like holding onto a flip phone in the world of smartphones. As Oracle NetSuite continually works to provide modern, faster, and more secure integration standards, SOAP Web Services do not support many of them. REST Web Services is the new face of NetSuite Integration. 

With official SOAP support scheduled to end starting from the 2026.1 NetSuite release, migrating to REST Web Services is the need of the hour. REST offers improved scalability, enhanced performance, and compliance with modern security and architecture standards.

This blog will help you understand why NetSuite is ending support for SOAP Web Services and how NeosAlpha can help you with a successful NetSuite SOAP to REST migration. 

What is NetSuite SOAP Web Services?

SOAP Web Services expose NetSuite as a data source for programmatic access, so most data operations, such as insert, update, delete, and select/search, are supported. Numerous operations are available as supporting operations for data read/write operations, or for providing metadata, or for exposing an application function to programmatic access. 

Advantages

1. Batching – SOAP’s batch capability allows developers to combine multiple operations into a single request. It is best to perform bulk data imports or updates to reduce network overhead and improve efficiency. 
2. Saved Searches – Allows you to execute NetSuite Saved Searches directly through the SOAP API. It gives you flexibility to query and retrieve tailored datasets without having to build complex query logic from scratch. 
3. Maturity & Stability – As a long-established integration standard, SOAP API offers a mature feature set and detailed documentation. Many connectors and integrations for legacy systems were built with SOAP in mind, making it the perfect choice for existing systems. 
4. Legacy Tax Engine Support – Some businesses still use the NetSuite legacy tax calculation engine, which is not yet fully supported by REST endpoints. 

Disadvantages

• Higher Complexity – SOAP’s verbose XML and strictly defined WSDL schemas make the development and debugging quite laborious. 
• Planned Deprecation – Starting with the 2026.1 release, NetSuite SOAP endpoints will no longer be included by default, and you will need to migrate to REST. 

What is NetSuite REST Web Services?

The NetSuite REST web services provide an integration channel that extends SuiteTalk’s capabilities through a REST-based interface for interacting with NetSuite. You can use CRUD (create, read, update, and delete) operations to manage NetSuite records and navigate between records, get and process the API definition and record metadata, and run NetSuite queries on records. 

Advantages

• Simplicity – REST Web Services offers an intuitive design, making it easier to use and implement. By leveraging standard HTTP methods like GET, POST, PUT, and DELETE, REST simplifies integration workflows and accelerates development cycles.
• SuiteQL Integration – SuiteQL is one of the most powerful REST features, enabling advanced, SQL-like queries directly across NetSuite data. This capability allows developers to extract customized datasheets efficiently and eliminates the need for complex Saved Searches. 
• Modern Authentication – REST supports the current industry standard, OAuth 2.0, for secure, flexible API authentication. It provides a more flexible approach to managing access tokens and permissions compared to the older Token-Based Authentication (OAuth 1.0) used by SOAP.
• RESTlets for Flexibility – While a native REST endpoint doesn’t support certain record types or operations, RESTlets steps in as an option. 
• Continuous Innovation – Oracle NetSuite is enhancing REST capabilities with new features such as Suite Tax, modern record types, and improved analytics, while SOAP remains in maintenance mode.

Disadvantages

• Maturity – REST Web Services still do not feature parity with the long-standing SOAP API in every single corner case.
• Batch Processing Limitations – The REST API currently processes requests individually; therefore, bulk operations require more calls, and NetSuite needs to improve its batching capabilities. 

Why is Oracle NetSuite Removing SOAP Web Services?

SOAP Web Services no longer meet the NetSuite modern integration channel standards, and hence, Oracle NetSuite is removing the SOAP Web Services: 

• Exposed objects – SOAP web services don’t support modern business features, and new records won’t be made available to SOAP in the coming years. 
• Outdated Technology Stack – SOAP does not support modern architectural standards, such as metadata architecture, SuiteAnalytics Workbooks, and SuiteScript 2.x Analytics APIs. 
• Legacy Authentication – SOAP Web Services uses token-based authentication, which is not in line with modern security standards. 

REST Web Services Replacing SOAP Web Services

SuiteTalk REST Web Services is the modern technology of NetSuite designed to replace the SOAP framework. 

• Use cases previously implemented using SOAP can now be achieved using REST Web Services. 
• Oracle NetSuite is working to ensure functional parity between SOAP and REST, closing the remaining gaps in upcoming releases. 
• SuiteScript can be used for specific scenarios where REST Web Services may not yet provide full coverage. 

iPaaS NetSuite Integrations (Boomi, Celigo, Workato)

Organizations that use modern iPaaS solutions such as Boomi, Celigo, or Workato should start evaluating their workflows to ensure a successful NetSuite SOAP to REST migration. 

1. Celigo

Celigo’s NetSuite flows typically rely on a SuiteApp bundle (Internal ID 20038) that integrates via RESTlets instead of exclusively using SOAP Web Services.  

In your NetSuite account, sign in as an admin and navigate to Setup > Customization > SuiteBundler > Search & Install Bundles

Source: Celigo

When you configure an export/import flow in integrator.io for NetSuite, it checks for the bundle. It uses the RESTlet path by default; in many cases, no migration effort is needed if you haven’t explicitly chosen SOAP-based Web Services.

If you have exclusively selected “SOAP Web Services” in the past, then such flows will require migration to a RESTlet-based alternative.

2. Boomi iPaaS

Boomi offers a SOAP-based connector for NetSuite. However, according to the September 2025 update, a native REST connector for NetSuite is not available widely yet. Until Boomi releases a solution for it, organizations using Boomi can use the generic HTTP connector or custom logic to call NetSuite’s REST endpoints. 

3. Workato

Workato supports both SOAP and REST connectors for NetSuite, making it easy for organizations to migrate if they are using this iPaaS. 

For any recipe currently using the SOAP connector, there is a migration path: you can copy the recipe and replace the SOAP operations with REST operations. Because many parameter names and object types remain consistent between SOAP and REST in NetSuite, this can be a straightforward refactor.

While it won’t be entirely “plug-and-play” in all cases, the existing REST connector means fewer barriers to transition.

SOAP Web Services to REST Web Services Upgrade Guide

A clear roadmap for transitioning from NetSuite SOAP Web Services to the modern REST Web Services framework. 

Phase 1: Discovery & Planning

• Audit and document all SOAP integrations and their dependencies.
• Classify integrations by business criticality and risk level.
• Review authentication (Token-based/OAuth 1.0) and plan for OAuth 2.0 migration.
• Define REST architecture (endpoints, JSON, error handling, versioning) and roadmap with cut-over dates.

Phase 2: Design & Prototype

• Map SOAP operations to REST equivalents using NetSuite’s operation tables.
• Design REST endpoints with clear resource paths, HTTP methods, and JSON schemas.
• Establish OAuth 2.0 flow, token lifecycle, and access permissions.
• Build a small prototype to validate REST behaviour before full rollout.

Phase 3: Implementation & Migration

• Develop REST endpoints and refactor client integrations from SOAP to REST.
• Convert XML payloads to JSON and update authentication mechanisms.
• Use RESTlets or hybrid solutions for unsupported operations.
• Implement robust logging, monitoring, and data validation processes.

Phase 4: Testing & Parallel Run

• Functionally test REST endpoints to ensure parity with SOAP.
• Conduct performance, load, and security tests (OAuth 2.0 validation).
• Run SOAP and REST in parallel to compare results and detect issues.
• Monitor and refine based on metrics, and communicate progress to stakeholders.

Phase 5: Cut-over & Decommission

• Switch clients to REST as the primary integration channel post-validation.
• Monitor live integrations and resolve any post-go-live issues.
• Retire or archive SOAP endpoints to eliminate technical debt.
• Update documentation and integration runbooks to reflect REST architecture.

Phase 6: Optimization & Future-proofing

• Leverage new REST capabilities like SuiteQL and advanced analytics.
• Configure middleware/iPaaS for REST-native performance and scalability.
• Track NetSuite release updates for REST enhancements or SOAP retirement.
• Conduct team training and periodic audits to maintain modern standards.

How Does it Affect You?

The deprecation of Oracle NetSuite SOAP Web Services will directly affect organizations that rely on custom-built or third-party integrations to connect to NetSuite. While other Oracle-managed solutions will continue to work smoothly, businesses using SOAP-based connectors must begin migrating to REST Web Services to ensure uninterrupted operations. 

• Action Required– Businesses using custom-built or third-party integrations based on the SOAP API will be directly impacted. 
• No Action Required – Organizations using Oracle NetSuite solutions such as NSPOS, Suite Projects Pro, or NetSuite Connector don’t need to take any action. These products will work fine. 
• SOAP API – REST API will replace SOAP API for better performance, stronger security, and broader flexibility. 
• Final SOAP Version – Businesses need to upgrade their SOAP Connectors to the 2025.2 SOAP version, which is the last supported release before SOAP retires. 
• Strategic Advantage – Migrating to REST not only ensures compliance but also delivers modern NetSuite capabilities, such as SuiteQL support, OAuth 2.0 authentication, and enhanced analytics performance.

How Does NeosAlphe Help You with a Successful SOAP-to-REST Migration?

As an Oracle NetSuite Partner, NeosAlpha brings years of experience and expertise in both SOAP and REST Web Services to ensure a secure, seamless migration. 

1. Expertise in SOAP and REST

Our team has experience and expertise in both NetSuite SuiteTalk (SOAP) and SuiteTalk REST Web Services. From record structures to authentication methods and the performance nuances of both APIs, we understand how their operations work. 

2. API Comparison and Mapping

To ensure a successful SOAP to REST migration, we conduct a comprehensive analysis of your current SOAP integrations (custom scripts, third-party connectors, saved searches) to create a detailed SOAP-to-REST operation mapping. 

3. Migration Strategy

From assessing integration dependencies and authentication mechanisms to implementing SuiteQL queries and RESTlets for unsupported endpoints, we design a step-by-step migration roadmap to ensure zero downtime. 

4. Post Migration Support

We offer post-migration testing, performance tuning, and REST API optimization, ensuring your integrations are fully stable and aligned with future NetSuite updates.

Conclusion

Oracle NetSuite is officially announcing the end of SOAP support starting from the 2026.1 release. Businesses that rely on SOAP APIs must begin planning their migration to ensure continuity and compliance. 

REST Web Services will empower organizations with modern integration capabilities, such as SuiteQL for advanced querying, OAuth 2.0 for robust authentication, and greater scalability for high-performance integration. Transitioning from SOAP to REST requires more than a simple code rewrite; as a certified expert, NeosAlpha helps you with a well-planned migration that ensures zero downtime. 

Frequently Asked Questions

1. Can I still build new integrations using SOAP web services?

Starting with the 2026.1 NetSuite release, all newly built integrations should use REST web services with OAuth 2.0. With the 2027.1 release, you will not be able to create any new integrations using SOAP web services.

2. What is replacing SOAP web services?

SuiteTalk REST Web Services is replacing the NetSuite SOAP Web Services. To address gaps in SOAP capabilities in REST Web Services, Oracle NetSuite is enhancing its REST API. 

3. I use a specific SOAP operation. How can I achieve the same result in REST?

The SOAP Web Services to Rest Web Services upgrade guide provides details, such as alternatives for each SOAP operation. You can contact our NetSuite experts to get a clear understanding of the solution. 

4. Since 2025.2 is the last planned endpoint, should I start planning the transition of my integrations to REST web services now?

Yes, you must start building new integrations using RESTful web services and OAuth 2.0 authentication. Also, connect with NetSuite consultants to transition your existing SOAP integrations to REST web services. 

5. When should we expect REST to achieve parity with SOAP web services in specific capabilities?

Oracle NetSuite is constantly working to achieve REST parity with SOAP. Most existing SOAP solutions can be migrated to REST, and parity will be significantly improved in upcoming NetSuite releases. Also, use SuiteScript RESTlets when an object or method is not available in REST web services.