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Azure Communication Services
An Azure communication platform for deploying applications across devices and platforms.
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Namrata Omniwish, Thanks for additional info you shared via private message.
Just to highlight here to benefit the community.
-If you bought the phone number from ACS:
The ACS phone numbers don't support Send/Receive SMS, and this is one of the requirements from Meta to have the phone number able to Send/Receive SMS.
Phone Number Management for Singapore - An Azure Communication Services concept document | Microsoft Learn
-If you are using your own phone number, please confirm that Phone number isn't associated with a WhatsApp Business Account (I believe those are limitations from Meta, I'm unable to find an official Meta doc), based on my understanding, you can’t have one phone number linked up for both WhatsApp Messenger and WhatsApp Business ( for this you may confirm with Meta support)
The Prerequisites listed here: Register WhatsApp business account - An Azure Communication Services concept document | Microsoft Learn
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