Pagination for REST Get call(from 3rd party)

[Raji9]

Hi All,

I  created a REST message for the GET call and tested it with mutual authentication. Mutual authentication is working fine.

I created Flow, Subflow, and action.  In that action, I am using the script step for parsing, Pagination supports only for REST step.

I can not use the REST step because of mutual authentication.   Is there any other better way to do pagination?

Thanks

Ra

[JamesEcoStratus]

When it comes to handling pagination in ServiceNow flows with mutual authentication requirements, you can employ a workaround that involves scripting. While the REST step directly supports pagination, you can still achieve pagination in your scenario by utilizing the following approach:

Step 1: Configure Your REST Message and REST API Endpoint

• Ensure that your REST message and REST API endpoint are correctly configured, as you've mentioned that mutual authentication is working fine.

Step 2: Create a Scripted REST Step

• In your flow action, instead of using the REST step, use a scripted REST step to make the initial GET request to your REST API endpoint. This scripted step should handle the pagination logic.

Step 3: Pagination Logic in the Scripted Step

• In your scripted REST step, implement the pagination logic manually. This typically involves making successive GET requests to the API, each with the appropriate pagination parameters (e.g., page number or offset) to retrieve additional records.

Step 4: Process Responses and Pagination Tokens

• Process the responses from each API call to extract the data you need. Additionally, look for any pagination tokens provided by the API, such as a "next page" URL or a "total number of pages" indicator.

Step 5: Loop for Pagination

• Implement a loop within your scripted step to continue making API requests until you have retrieved all the required data or until there are no more pagination tokens to follow.

Step 6: Aggregate Data

• Aggregate the data retrieved from each API call as needed.

Step 7: Output Data

• Once you have all the data, output it as required for further processing or use within your ServiceNow flow.

While this approach involves scripting and manual pagination handling, it allows you to work around the limitation of the REST step not supporting mutual authentication. Be sure to handle any error conditions gracefully and include logic to handle various pagination scenarios that the API might present.

Remember to thoroughly test your flow to ensure that it successfully retrieves and processes data from the REST API while maintaining security through mutual authentication.

If you have specific questions about scripting or need assistance with script development for pagination, please provide additional details about your REST API and pagination requirements, and I'd be happy to offer further guidance.

Best of luck with your ServiceNow project.

James @Ecostratus

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