Error 21728
Product: Programmable SMS
ERROR - 21728
Campaign registration failed due to length validation failures
We could not register your US A2P Campaign because one or more field(s) do not satisfy length requirements.
Possible Causes
One or more field(s) do not satisfy length requirements.
Possible Solutions
Please fix the error and retry Campaign registration. Please check out our support article to read about the length requirements on these fields.