Mango
06/02/2026, 8:21 AMVapi Support Bot
06/02/2026, 8:22 AMbash
curl 'https://api.vapi.ai/call' \
-H 'authorization: Bearer {VAPI-PRIVATE-TOKEN}' \
-H 'content-type: application/json' \
--data-raw '{
"assistantId": "{YOUR_ASSISTANT_ID}",
"customer": {"number": "{CUSTOMER_NUMBER}"},
"phoneNumberId": "{YOUR_PHONE_NUMBER_ID}"
}'
If remainingConcurrentCalls is negative or stuck, this typically requires Vapi support to reset your concurrency. Please contact support with your organization ID for a manual reset and review your recent call volume to avoid hitting concurrency caps in the future.
According to the documentation, concurrency issues can occur if your call volume exceeds your plan's limit or if there is a desync in tracking active calls ([Vapi documentation](https://docs.vapi.ai/calls/call-concurrency)).
Source:
- [Understanding Call Concurrency](https://docs.vapi.ai/calls/call-concurrency)Mango
06/02/2026, 2:17 PMVapi Support Bot
06/02/2026, 2:18 PMbash
curl 'https://api.vapi.ai/call' \
-H 'authorization: Bearer {VAPI-PRIVATE-TOKEN}' \
-H 'content-type: application/json' \
--data-raw '{ "assistantId": "{YOUR_ASSISTANT_ID}", "customer": {"number": "{CUSTOMER_NUMBER}"}, "phoneNumberId": "{YOUR_PHONE_NUMBER_ID}" }'
For more details, see the [Vapi concurrency documentation](https://docs.vapi.ai/calls/call-concurrency).
Source:
- [Understanding Call Concurrency](https://docs.vapi.ai/calls/call-concurrency)Chiranjeet Mishra
06/02/2026, 5:26 PMMango
06/04/2026, 4:22 PMChiranjeet Mishra
06/04/2026, 4:24 PMMango
06/04/2026, 4:29 PMChiranjeet Mishra
06/04/2026, 4:32 PM