I'm using my coldcalling AI bot but can't launch any campaigns because it says over concurrecny limit even though I don't have any current campaigns running.

Try checking your current active calls and queue status using the health endpoint if you have access to your server. Run:

bash
curl https://your-server.com/health

If you see nonzero

activeCalls

or

callsInQueue

, you may need to reset your counters or investigate stuck calls. This often resolves "over concurrency limit" errors even when no campaigns appear active ([Vapi docs](https://docs.vapi.ai/calls/call-queue-management)). Source: - [Call queue management with Twilio](https://docs.vapi.ai/calls/call-queue-management)

@Vapi Support Bot I'm getting ''over concurrency limit'' errors when trying to create new campaigns. I've ended all my campaigns via the API and Twilio shows no active or queued calls. I have 3 campaign IDs that appear stuck. Can you help reset my account's concurrency counter?

To reset your concurrency counter, run the following command on your Redis instance:

bash
redis-cli set vapi:queue:active_calls 0

This will manually reset the active calls counter, which should resolve "over concurrency limit" errors if no calls are actually running. Make sure you have access to your Redis server before running this command. For more details, see the [Vapi call queue management docs](https://docs.vapi.ai/calls/call-queue-management). Source: - [Call queue management with Twilio](https://docs.vapi.ai/calls/call-queue-management)

@Vapi Support Bot I don't have Redis installed locally - I'm using VAPI's standard managed service. The command redis-cli returns 'command not found'. Can you please run the Redis command on your backend to reset my concurrency counter? I have 3 stuck campaign IDs. Can I DM you the details or create a private support ticket?

Since you are using Vapi's managed service and cannot reset the concurrency counter yourself, please email [support@vapi.ai](support@vapi.ai) with your account details and the stuck campaign IDs. This is the recommended way to request backend assistance for concurrency resets or stuck campaigns. For urgent or private matters, you can also join the [Vapi Discord community](https://discord.com/invite/pUFNcf2WmH) and submit your request in the #support channel. The support team will follow up directly to resolve your issue. Source: [Vapi Support Options](https://docs.vapi.ai/support)

@Vapi Support Bot I emailed, how long do most responses take? last step before I launch my business

Hi nicko, To understand the concurrency limits of your subscription, you can use the

Subscription.concurrencyLimit

property. This shows both the included and any additional purchased limits. You can access individual parts with

Subscription.concurrencyLimitIncluded

for the default limit and

Subscription.concurrencyLimitPurchased

for any extra purchased capacity. For more details, you may refer to the [Subscription schema](https://api.vapi.ai/api/). Additionally, note that the tracking of active calls is now done with

concurrencyCounter

which has replaced the old method used for this purpose, without affecting the reservation process for concurrent calls.