Here are the sequence of steps to be followed , to Delete the Resource in Embedded PPDS System.
Before proceeding for the Deletion steps, Please make sure, this Resource is not used in any of the existing Orders & in of the existing Production data Structures
Execute the T Code : /SAPAPO/RES01
Enter the Resource & the Location
In the next screen that is displayed, Select the Resource & Click on Model Assignment Icon
In the next screen, that is displayed, Click on the Icon : Delete the Resource from the Model
Then, Press Enter/Continue
Then, Click on Delete Icon, as shown below & then Save
With this , the System will Delete the Resource from the Database.
Hope, this helps, kindly update with your comments, if any.