I'm trying to create outbound campaigns using the UI, the same way I always do, but keep hitting errors. Uploading a csv of name, numbers and frequently get the error in the red box in the corner that the numbers are formatted incorrectly. For example customer.157 is not formatted correctly. But when I check, every number is formatted correctly. On top of that I am often getting the error that creating the campaign failed with no reason, but it creates half the campaign https://cdn.discordapp.com/attachments/1450098756971135086/1450098757139038330/image.png?ex=69414d35&is=693ffbb5&hm=2ecc64735cd26ab2e8d77e3dff66f2919a8e43bf69b5c46e43f0c445a3b0c9a4&

To resolve the "number formatted incorrectly" error, ensure your CSV uses the exact structure below—especially that the

number

column is all lowercase and phone numbers are in E.164 format (e.g., +14151234567), with no spaces or special characters:

number,name
+14151234567,John
+14153455678,Mary

Double-check for hidden spaces, blank rows, or encoding issues (save as UTF-8). This should help your campaign upload succeed in the UI. For more details, see the [Outbound campaigns overview documentation](https://docs.vapi.ai/outbound-campaigns/overview). Source: - [Outbound campaigns overview](https://docs.vapi.ai/outbound-campaigns/overview)

@Vapi Support Bot I have double checked, and also put the spreadsheet into chatgpt which scanned it and said every number was formatted correctly

Since you've already verified your CSV formatting, I recommend checking your organization's concurrency limit, as hitting this limit can cause partial campaign creation or unexplained failures. In the Vapi Dashboard, review your concurrency settings and consider increasing the limit if needed. For reference, if your limit is 10, only 10 calls start at once and the rest are queued or may fail: To check or request a concurrency increase, see: [Outbound campaigns overview documentation](https://docs.vapi.ai/outbound-campaigns/overview) Source: - [Outbound campaigns overview](https://docs.vapi.ai/outbound-campaigns/overview)