D365FO REST API Integration: Asynchronous Calls & Retry Guide
D365FO REST API integration can be challenging in Dynamics 365 Finance and Operations, especially when handling asynchronous requests with retry logic for reliability under high demand. During peak times, your D365FO instance may face network glitches, server timeouts, or rate limits from the APIs you’re integrating with. This guide walks you through creating a robust asynchronous API client in D365FO that uses exponential backoff and custom error handling. This approach minimizes disruptions and maintains a steady data flow, even when APIs encounter temporary failures.
The Approach: An Asynchronous API Client with Exponential Backoff
This client tackles those typical issues head-on with:
- Asynchronous Calls: By handling API requests asynchronously, it doesn’t hold up the main process, so everything else keeps moving smoothly.
- Exponential Backoff Retry Mechanism: Each retry happens with a progressively longer delay, minimizing repeated requests too quickly.
- Error Handling: It catches and logs errors, tracks retries, and provides clear messages to make debugging easier.
This code uses D365FO’s SysHttpCommunicationClient for API communication and a custom retry function to handle intermittent issues. Below is the code and an explanation of how each part works.
APIClient.XPP
APICaller.XPP
I hope this article helped you implement asynchronous REST API integration with HTTP requests and retry logic in D365FO (X++) for Dynamics 365 Finance and Operations. Don’t forget to share this article if you found it useful! You may also want to check out our guide on converting strings to enums with
Convert string into enum str2enum in x++.
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