Remove Level in Active Categorization Schemas

Greetings Community,

Our Org is using SAP CRM7, I have successfully activated a Cat Schema and it was working 100%. A couple of months later a requirement from Business to remove certain Category Levels in the Service Request, these levels have no link to ECC, purely on CRM itself.

I have adjusted the Valid To Date to yesterday's date but the Level (e.g Digital Query - 1st Option) still appear in the Service Request Level one list

Any advice would be highly appreciated ;-)

Cheers,

Fatsie