We have a contact centre application serving brands to reach out to their customers when they write to the brand. Imagine a customer writes to the brand's WhatsApp business chat and agrees to receive a call from the brand's representative, the brand representative then calls the customer using our contact centre application.
Is this possible to do via the available APIs?

We can't subscribe to message_echoes and messaging_handovers in Webhooks
Whatsapp Business API
we get this error message
"You could not subscribe to some of the fields requested due to a permissions error."
can someone please assist.

Create App Onboarding failure error message on whatsapp setup

in response to recent changes, the character limit(550) for marketing templates in the WhatsApp API has been reduced, impacting the way I communicate detailed information to my clients. My clients are busy individuals who prefer comprehensive messages to avoid back-and-forth communication. The current limit constrains my ability to convey necessary details effectively, risking miscommunication and reduced client satisfaction.
I understand the intention behind this change is to enhance user engagement by encouraging concise messaging. However, given my specific use case where detailed communication is essential, I am exploring any possible avenues to adjust or extend the character limit, even if it's on a case-by-case basis.
I am seeking advice on whether there are any existing best practices for conveying detailed information within the new constraints, or if there's a process to request a character limit extension for specific scenarios. Additionally, I would appreciate any tips on optimizing message content to fit the new limitations without sacrificing crucial information.
Thank you in advance for your insights and assistance

Using Twilio API to send WhatsApp messages using Python. Sending rate is about 1 message per second. Have a confirmed business account with Meta/WhatsApp and the phone number is approved for 1,000 business-initiated messages per 24-hour period.

Trying to do some type of load test by sending messages to a single number - my number. All is good for 50+ messages and then I get the above error. Neiter the API rate limit nor the max messages per day are being exceeded.

Any help is greatly appreciated.

I have looked at the error code documentation and it does not seem to fit the situation. I have tried Twilio web support but no response yet.