No mapping between accounts names and security IDs was done" - W.Server 2003

Need some help folks

I am trying to delete a bunch of folder/data and for some folders I get the error "No mapping between accounts names and security IDs was done" I am trying to add "domain\Administrators" with full control to the folders that cannot be deleted , but I get the mentioned error.

For deletion I am using the follow command (Folder path is an example only):
RD C:\Users\502270632\Documents /S /Q

This command has sucessfully deleted some folders , but some not...

For permission , Im using the follows , and I get the mentioned error :

icacls C:\Users\502270632\Documents /grant Tokyo\Administrators:F
Tokyo\Administrators: No mapping between account names and security IDs was done.
Successfully processed 0 files; Failed processing 1 files

I also try the follows :
icacls C:\Users\502270632\Documents /grant Administrators:F
C:\Users\...