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DialNexa limits and guardrails protect users from invalid configuration. Some limits are visible in the dashboard, such as webhook URL length, retry count, webhook timeout, phone number validation, silence timeout, max call duration, and published-version edit locking.
Limits are not suggestions. They are the product telling you where the edge is before the edge becomes support work.

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Dashboard-Visible Limits

These limits are enforced or surfaced in current product flows.
AreaLimit or guardrail
External webhook URLMust start with https:// and be 150 characters or less.
External webhook retry count0 to 3.
External webhook timeout1,000 ms to 60,000 ms.
Phone test recipientValidated against selected country code and expected digit length.
End call on silenceDashboard slider uses 15 to 30 seconds.
Maximum call durationDashboard slider uses 1 to 90 minutes.
Custom function timeoutDefault reducer value is 120000 ms.
Batch and campaign CSV uploadCSV or Excel, maximum 10 MB per file.
Published agent versionMany settings are disabled when viewing a published version.

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Limit Questions

Use HTTPS and keep it within the character limit.
You may be viewing a published version.
Check country and local digit count.
Files must be CSV or Excel and at most 10 MB. If the file type and size are fine, check the headers against the downloaded template. See Common Upload Errors.

External Webhooks

See webhook validation.

Call Settings

Review timing controls.

Common Upload Errors

Fix CSV issues.