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Facebook messenger message size limit

I am trying to implement the Facebook messenger botman. I'm having problems with the answer of the bot with the answer, which contains a large number of words. Is there a limit on the number of words that can be used in a response?

PS: It works fine otherwise

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As described in the document , the text message must be UTF-8 and has a limit of 640 characters.

There are other limitations in the template for the field name button, subtitle, and call for action.

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It looks like the limit has been updated to 2000 characters. enter image description here

Source: https://developers.facebook.com/docs/messenger-platform/reference/send-api#request

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