Recipient’s phone number (must be RCS-enabled and in international format) For
example, if the number is in the India, the format would be: +91XXXXXXXXXX
If you have a registered template with placeholders and you need to submit
parameter values in the same order as in the template, you can represent this
as an array of values. Ensure that the values are not null, and if the
template was registered without placeholders, you can submit an empty array.