unable to delete a yellow request from DSO

i am unable to delete a yellow request , without a DTP job running in the background.     I checked the status in RSBKREQUEST table , it is in status =4 for technical and user.  Although the status shows as 4 in the table , the request is still showing up in the DSO in Yellow

in the log of the request it is showing as

Preprocessing and Postprocessing

     1) Request status cannot be set to red in its current state

    2) Termination in problem report RSS2_DTP_RNR_SUBSEQ_PROC_SET   in row 79