Ok thanks for the reply. Zen said they were in a web chat with their supplier about the issue and have escalated it. Just a case of checking for updates I suppose. Just a bit frustrating not knowing.
BT call those 'exception' as a TAG and nothing can progress until the issue has been resolved and the TAG removed.
I had a TAG put on my line due to fibres coming out of our Splitter Node was all in the wrong trays, so the fibres at all the DP's didn't match their database.
So BT sent out their engineers out (5 or so) to cut and re-join the fibres correctly into the right trays, which took a couple of weeks for the work to be done, then for us due to the incompetence of our case handler a further 2 to 3 weeks for the TAG to be removed from our line, then engineer visits booked and job done.
Overall very happy.