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WhatsApp node not sending audio

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testXY
(@testxy)
Posts: 4
Active Member
Topic starter
 

I'm attempting to send an audio file via the WhatsApp Business Cloud node to my WhatsApp number.

My current workflow involves receiving a voice message through WhatsApp, transcribing it to text using callin.io, processing it with an agent, and then converting the result back into a voice message. I want this generated voice message to be sent to my WhatsApp number. While I can hear the converted voice message within callin.io, it's not being delivered to my WhatsApp. I'm not seeing any error messages in callin.io, my browser, or my Facebook account. The WhatsApp node indicates successful execution. Does anyone have insights into why the voice message might not be sending?

Information on your callin.io setup

  • callin.io version: 1.84.3
  • Database (default: SQLite): qdrant
  • callin.io EXECUTIONS_PROCESS setting (default: own, main):
  • Running callin.io via (Docker, npm, callin.io cloud, desktop app): docker
  • Operating system: ubuntu 24.04.2 LTS
 
Posted : 24/06/2025 2:47 pm
Sudhanshu_Sharma
(@sudhanshu_sharma)
Posts: 13
Active Member
 

Hello,

The reason for this is due to WhatsApp's limitations.

Please verify that your audio file is under 16MB and is a format supported by WhatsApp.

Facebook

 
Posted : 24/06/2025 3:04 pm
testXY
(@testxy)
Posts: 4
Active Member
Topic starter
 

Thanks for the quick reply! I've already checked this, and the audio file is 2.03MB and of type Ogg. I assume this shouldn't be causing the error.

 
Posted : 24/06/2025 3:09 pm
Sudhanshu_Sharma
(@sudhanshu_sharma)
Posts: 13
Active Member
 

Could you please share your workflow? I'll take a look!

:light_bulb:

Tip: Insert your workflow by clicking ‘

 
Posted : 24/06/2025 3:55 pm
testXY
(@testxy)
Posts: 4
Active Member
Topic starter
 

Thank you very much! I've added the workflow to the problem description.

 
Posted : 25/06/2025 6:15 am
Sudhanshu_Sharma
(@sudhanshu_sharma)
Posts: 13
Active Member
 

Hello,

Unfortunately, it appears the workflow wasn't shared correctly.

Could you please verify it? If the JSON is accurate, it ought to appear as the actual workflow in the preview, rather than just raw JSON.

 
Posted : 25/06/2025 1:50 pm
testXY
(@testxy)
Posts: 4
Active Member
Topic starter
 

Thanks for the hint, I have updated it now.

 
Posted : 25/06/2025 1:55 pm
Sudhanshu_Sharma
(@sudhanshu_sharma)
Posts: 13
Active Member
 

Great! I'll take a look and get back to you.

 
Posted : 25/06/2025 1:56 pm
Muiz
 Muiz
(@muiz)
Posts: 1
New Member
 

Hello, I'm encountering an error during transaction recording. Could you please suggest a resolution?

 
Posted : 26/07/2025 12:14 pm
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