| Error | Cause | Solution |
| Invalid API Key | Key copied incorrectly or incomplete | Copy the key again, check for spaces. |
| Invalid Secret Key | Wrong Secret Key | Verify you copied the correct Secret Key. |
| Insufficient Permissions | Spot Trading not enabled | Return to the Exchange and enable “Spot Trading” in API settings. |
| Connection Failed | Temporary network issue | Retry in a few minutes. |
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