Payload Size

[mickbut-ler]

Hi - What is the maximum payload size currently allowed by Meta for WhatsApp flows?

I’ve noticed that when the payload exceeds 1MB, the flow message is not sent, even though I still receive a success response like this:

{
  "messaging_product": "whatsapp",
  "contacts": [{ "input": "***********", "wa_id": "***********" }],
  "messages": [
    {
      "id": "wamid.HBgLMzE2MjI0NjM2OTEVAgARGBI3Qjg4RUI0NEEzOTE0QjEwQzEA",
      "message_status": "accepted"
    }
  ]
}

Could you confirm the current payload size limit and clarify why no error is returned when it's exceeded?

[mickbut-ler]

I saw the 10MB limit mentioned in the documentation, but when the payload exceeds 1mb, the flow isn’t delivered. Is there any way to support larger payloads or configure flows to allow more than 1MB?

Docs