Error 21910
Product: Programmable SMS
ERROR - 21910
Invalid From and To pair. From and To should be of the same channel.
From and To in the message send should be of the same channel.
Possible Causes
From=+120221592555 and To=whatsapp:+120221592551 From=whatsapp:+120221592555 and To=whatsapp+120221592553
Possible Solutions
Send message with the same channel. To and From have same prefixes or both
