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We have added a new API-Client routine to our SMS API which extends our LowBal Notification system so that remote client applications can be notified when an account's credit balance drops down to/below a pre-specified level.

Although we provide two other methods of knowing an account's balance programmatically, these have either been mis-used, out of customer's reach or inadequate for certain needs:

1. The existing Client-API check_balance routines can be used to query an account's balance. However, having found that some customers query their balance every minute of every day.
2. In response, as part of SMS API v2.1, we added the new balance as part of our response to the broadcast routine. However, upgrading to v2.1 is voluntary and, even then, there are occassions when customers connect from different servers and this information may not always be useful when found by one of them

Our assumption in querying an account's balance is to know whether it has dropped down to a certain level and this task is already fulfilled by the LowBal Notification system. As such, we hope that this addittion to our SMS API will make things easier for our customers.

The details of the new routine can be found here and any comments/bugs should be forwarded to Technical Support.