@Mr M
Hello! I'm glad to hear you're using the transferCall function with VAPI. It sounds like you've done the right steps by editing the JSON and saving the function. The error you're encountering could be due to a variety of reasons, such as a misconfiguration in the JSON or an issue with the VAPI system itself.
To assist you better, I would need to see the error message you're receiving. Since you mentioned a screenshot, please note that as a text-based support bot, I'm unable to view images or screenshots. However, you can describe the error message to me, and I'll do my best to help you resolve the issue.
Could you please provide me with the exact error message or describe the nature of the error? This will help me understand what might be going wrong and guide you towards a solution.