This article will take you through how to make Part Records / Vendor Records / Customer Records inactive
Please note that Blackpurl does not allow any user to delete a record - however Blackpurl will allow you to make a record inactive
If you need to find an inactive Part Records / Vendor Records / Customer Records, please review this article - How to Find an Inactive Part Record / Vendor Record / Customer Record
Part Record
Navigate to the Part Record that needs to be made inactive > click on 
From the Edit Merchandise screen,> uncheck the ACTIVE checkbox and then 
Customer Record
Navigate to the Customer Record that needs to be made inactive > click on 
From the Edit Customer screen > move the ACTIVE from YES to NO then click on 
Before making a Customer Record inactive, please ensure that you have checked on the record, that there are no open Customer Orders under this Customer
Vendor Record
Navigate to the Vendor Record that needs to be made inactive > click on 
From the Edit Vendor screen > move the ACTIVE from YES to NO then click on 
Before making a Vendor Record inactive, please ensure that you have checked that the Vendor is not attached to Automated Price Files and/or have Part Records attached to it