The character count limit for a message on WhatsApp Connect is 4096 characters. This limit is imposed by the WhatsApp Business API used for Sending Text Messages as explained here.
Sending a message containing more than 4096 characters will cause the following error (Figure 1):
Figure 1 Error
Note: The character count includes the display name and colon, so slightly fewer than 4096 characters are available for a message.
Note: Line breaks and items formatted with bold and italics also use up character space.
Full details on WhatsApp Connect can be found below:
WhatsApp Connect Admin and User Guide
If you require further assistance on WhatsApp Connect, please contact the Symphony Support team at email@example.com