How to do the integration using the rest webservice via mid server

[Ketan Pandey]

How to do the integration using the rest webservice via mid server 

[Chaitali_Vale · Accepted solution]

Hello @Ketan Pandey  , 

Integrating with external systems using REST web services via a MID Server (Mid-Server) in ServiceNow involves several steps. The MID Server acts as an intermediary between your ServiceNow instance and external systems, allowing you to communicate securely over the internet. Here's a high-level overview of the process:

1. Prepare Your MID Server:
Before you begin, ensure that you have a MID Server set up and running in your ServiceNow environment. Follow ServiceNow documentation or your organization's procedures to install and configure a MID Server if it's not already in place.

2. Create an Outbound REST Message:
In ServiceNow, you'll need to define an Outbound REST Message to specify the details of the external REST API you want to connect to. To do this:

- Navigate to "System Web Services" > "Outbound" > "REST Messages."
- Create a new REST Message and provide details like the endpoint URL, HTTP method (GET, POST, PUT, DELETE, etc.), and authentication method (if required).

3. Create a REST Integration (Outbound REST Endpoint):
Next, you need to create a REST Integration in ServiceNow, which will use the Outbound REST Message. Here's how:

- Navigate to "System Web Services" > "Outbound" > "REST Integrations."
- Create a new REST Integration and link it to the previously created Outbound REST Message.
- Configure the authentication, headers, and any additional settings required to connect to the external REST API.

4. Create a Scripted REST API (Optional):
If you need to transform or manipulate data before sending it to the external system or if you want to receive data from the external system, you can create a Scripted REST API. This allows you to define custom logic using server-side scripts.

5. Create a Business Rule or Scheduled Job (Optional):
To trigger the integration, you can use a Business Rule, Scheduled Job, or other appropriate mechanisms in ServiceNow. This step depends on your specific integration requirements and when you want the integration to run.

6. Configure MID Server Credentials:
Ensure that your MID Server has the necessary credentials or authentication details to access the external system. These credentials should be securely stored and managed in ServiceNow.

7. Test the Integration:
Before deploying the integration in a production environment, thoroughly test it in a development or testing environment. Verify that data is being sent and received correctly.

8. Monitor and Manage:
Once the integration is live, continuously monitor its performance and set up error handling mechanisms to handle failures gracefully. ServiceNow provides tools like event logs and alerts for this purpose.

9. Scaling and Optimization:
As your integration needs grow, consider scalability and optimization, such as load balancing multiple MID Servers, implementing retry mechanisms, and optimizing data transfer for efficiency.

Please mark my solution correct or helpful, if applicable.
Thanks & Regards,
Chaitali Vale

[Ketan Pandey]

Thank You Chaitali