Send whatsApp message to more than one phone number

I have to send a whatsapp message to several phone numbers.
phone numbers, I tried to separate them with semicolon, comma, comma only
and I get the same error every time.
ERROR: Bad request - please check your parameters

Hello @Federico_Cingolani, welcome to the community!

I’m sorry to hear you’re having trouble. As this is an English language forum, I have translated your post for you. It’d be great if you could make sure to post in English in the future so that all users can understand your question.

When you post a new question, can you make sure you include all the information from the forum template? This will help us to understand your problem in more detail.

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