Go to in DNAC. Click Edit and re-enter your Cisco Smart Account credentials, then Validate . This renews the API token.

| Error Code | Likely Cause | Fix | |------------|--------------|------| | NCSW10300 | Network timeout | Check firewall/proxy | | NCSW10301 | Invalid trans-id | Clear cache, sync time | | NCSW10302 | Checksum mismatch | Re-download image | | HTTP 403 Forbidden | Smart Account issue | Re-authenticate CCO |

: This error is documented in Cisco Bug CSCwd15921 , affecting versions 2.2.3.x through 2.3.4.x.