SAP Note 24288 - Deleting sets after deleting structure fields

Symptom:

It is not possible to delete basic sets if you already have deleted the respective fields of the DDIC structure or even the DDIC structure itself.
Error messages
GU142 "The table ... does not exist"
GU141 "The field ... does not exist"
Further key words
Transaction GS04 (Delete set)
Set maintenance

Cause and prerequisites

Program error

Solution
Option 1: From the list of the sets not used, delete the set (program RGSNUS00).
Option 2: Deletion of the set by calling up the function module G_DELETE_SET in the testbed of the function module maintenance (transaction SE37). Call parameters: TAB=table name, SET=set ID.
You can even delete entire set hierarchies using the function module G_SET_TREE_DELETE.