Timestamp precision increasing in Messaging API responses and callbacks




What's happening?

Effective February 4, 2024, all timestamps in messaging API responses and callbacks will support microsecond precision.

What do I need to know?

Prior to this change, timestamps in messaging API responses and callbacks were returned with a mix of millisecond and microsecond precision. In order to create a consistent experience moving forward, all timestamps will be returned with only microsecond precision in ISO 8601 format beginning February 4. 

The following is an example of a timestamp in ISO 8601 format:


What do I need to do?

If your client software is accepting ISO 8601 format with sub-second values up to six decimal places, no action is required. 

If you have coded a restriction on the number of decimal places accepted in API responses, please change your code to accept all six decimal places for microsecond precision. 


Please open a ticket with your Bandwidth Support Team or hit us up at (855) 864-7776!

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