When sending notices you may see that the notice sequence jumped back to notice sequence 1. For example:
Initial Notice, Seq = 1
Work Stop, Seq = 2
Full Registration, Seq 1 again.
This issue is usually caused by a change of sender's district. Send another Full Registration notice with the correct district. You can change and see current districts via the My Districts form (NSG0130) under Street Gazetteer Manager, Administration.