Unable to remove ESU


I'm just trying to remove an ESU from the NHSWM database but it won't let me delete it. The ESU in question is '04574100264617' (Length: 49.511).

Are you able to assist with this issue?

Certain ESUs will need to be deleted as I work through a project - so I will need to be able to delete these ESUs like I could before v8.1