I have encountered difficulties in sending messages via the API. Specifically, I am receiving the following error message:
Error Response: {"error":{"message":"(#135000) Generic user error","type":"OAuthException","code":135000,"error_data":{"messaging_product":"whatsapp","details":"Generic user error"},"fbtrace_id":"A1waaM6nHFNACvy0TmQySEo"}}
I would greatly appreciate any assistance or guidance to resolve this issue promptly.

I manage several Businesses and Pages.

When requesting the API for conversations I get an error for some pages and success for other pages.

The endpoint I'm requesting is: https://graph.facebook.com/v20.0/${page_id}/conversations?access_token=${access_token}&fields=${fields}

Fields:

name,id,updated_time,messages{created_time,from,id,message,attachments.limit(10) {file_url,video_data,size,name,mime_type,image_data,id,generic_template},to},participants

(Changing API version does not change the outcome).

The error that I'm receiving is:

{ "message": "An unexpected error has occurred. Please retry your request later.", "type": "OAuthException", "is_transient": true, "code": 2, "fbtrace_id": "Ak6OZA72-efdE-2Ko9NqSgy" } 

Graph Explorer returns the same error/result for the specific pages. Some returns conversations while other return the mentioned error.

Does anyone know what causes these errors?

I haven't made any changes to my code. The request was consistently working for a while, but recently it started giving these errors for some pages.

Earlier Facebook Graph API would always return conversations as expected.

When I try to create a flow (Account tools > Flows), a screen appears asking for company verification. But, when I click the Start button, a message appears: Congratulations, your business has been verified by Meta. However, the screen to manage access to the flows does not appear.

I have a Facebook token that I'm trying to access Pages with but the API is returning an empty array. That seems like a simple permissions issue but when I debug the token in Facebook's Token Debugger it shows I have permissions to multiple pages.

Is there a way to get the pages to show up in the /me/accounts endpoint? Or is there an endpoint that can get me the granular scopes as listed on the Token Debugger?

if i post hi or anything on whatsapp, it used to come through webhook to ny application. now its not working