The messages in an SMS Configuration are numbered consecutively. Inserting and deleting messages causes the index numbers to increment and decrement.
If your application contains Send functions that send messages from the Configuration, you must edit the message index number accordingly.
Example
In the following figure, the Send function is set to send the message with Index # 2.
In the next figure, the user inserted a line, causing the index number to increment. However, the user did not edit the Send function, and message Index # is now blank.
