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updatedAt: 2026-08-27T21:07:33.000Z
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# Sandbox throttling limits

The Walmart sandbox sets throttling limits on Marketplace API calls. Exceeding these limits returns a `429 Too Many Requests` error. If you encounter an error, contact Walmart Partner Support.

Refer to the table to prevent errors caused by exceeding throttling limits.

| Feed type       | Max requests per hour | Max file size per call | Processing time per request |
| --------------- | --------------------- | ---------------------- | :-------------------------- |
| Items           | 30 per hour           | 100 KB                 | 30 mins                     |
| Prices          | 30 per hour           | 5 KB                   | 30 mins                     |
| Promotion       | 30 per hour           | 25 KB                  | 30 mins                     |
| Inventory       | 30 per hour           | 2 KB                   | 30 mins                     |
| Lag Time        | 30 per hour           | 2 KB                   | 30 mins                     |
| Returns/Refunds | 30 per hour           | 2 KB                   | 30 mins                     |