Nothing to worry about - if it persists though then speak to your IP and get them to sort it.
It may well depend on how long you have been in your IVA as it can take some time for information to filter down the line.
Sharing from experiences of dealing with debt
The greatness of a man is not in how much wealth he acquires, but in his integrity and his ability to affect those around him positively.
Bob Marley. http://kallis3.blogs.iva.co.uk