Details
Solid Edge doesn't allow user to delete layer from active sheet even though it's not active on the drawing sheet.
Getting warning message as "The active layer cannot be deleted. '0' is active on sheet(s) or block(s): 2D Model.
Solution
The customer's draft file includes multiple drawing sheets.
Even though the '0' Layer is inactive in Sheet 1 it still an active layer on 2D Model sheet.
To delete the '0' Layer, you need to make that layer inactive in all sheets.
Notes and References
9617609
Hardware/Software Configuration
Platform: INTEL
OS: windows
OS Version: 1064
Product: SOLID_EDGE
Application: DRAFT
Version: V109MP15
Function: LAYERS
Ref: 002-8016621