How to Fix Error 429: Too Many Requests in ZappySys (Quick Guide)

Introduction

When working with REST APIs via ZappySys SSIS/ODBC PowerPack, you might see this error:

429 – Too Many Requests

This means the API provider is throttling you because your package is sending more requests than the allowed rate limit.

Common Causes

• Paginated or looping calls with no delay between requests
• Parallel tasks hitting the same API too aggressively

Quick Fixes

• Check the API’s rate-limit policy (e.g. X requests per minute)
• Enable Throttling on the ZappySys JSON/XML Source to add a wait time between calls
• Turn on Auto-Retry for HTTP/OAuth connections and handle status code 429
• Add a small delay in For Loop / Foreach Loop containers to avoid back-to-back calls

These tweaks reduce API pressure and prevent your packages from failing due to 429 errors.

👉 Read the full troubleshooting guide with screenshots and detailed steps