Speeding Up Invoice Tax Calculations with ONESOURCE REST API: Pros and Cons

For companies processing high invoice volumes, the ONESOURCE REST API offers a clear advantage over SOAP. With the ability to handle up to 1,000 invoices in a single call, the REST API can significantly reduce processing time and server load compared to the SOAP API, which only processes one invoice per request.

Key Advantages

• Batch Processing: Submit up to 1,000 invoices per call, saving time and reducing server load.
   
• Enhanced Performance: Fewer requests mean faster responses and streamlined workflows.

A Potential Drawback

However, there’s one downside: Error Handling. If one invoice in the batch of 1,000 encounters an issue, the entire request may fail. This can lead to delays and the need for smaller batch sizes to ensure accuracy.

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Tips for Optimizing Batch Processing

1. Run Smaller Batches: Consider grouping invoices in batches of 100-200 to minimize risk while still enjoying speed improvements.
    
2. Error Monitoring: Implement robust error handling and logging to quickly identify and resolve issues within batches.
    
3. Testing and Validation: Test batch sizes to find the optimal point where you gain efficiency but minimize the risk of failed requests.
    

While the ONESOURCE REST API is powerful, thoughtful implementation—like managing batch sizes—ensures you get the best of its benefits without being slowed down by batch failures.

For more on tax API optimization, visit Glinteco.