See the appendix of z/OS Cryptographic Services ICSF Application Programmer's Guide to determine how to resolve the unexpected return and reason codes from the ICSF service. If you are issuing the RACDCERT DELETE command and the reason code is x'271C' or x'0BD3', the certificate's associated key could not be found in the ICSF PKDS (public key data set) or TKDS (token key data set). Reissue the command with the FORCE keyword if you want RACF® to ignore this error.