E4172 Cmd Rej: Can't switch existing Pfx/Sfx, use RDMOD to reset

The rdmod=yes parameter must be specified to reset the current digit modifier values before the values specified for the npdd/npds and nsdd/nsds parameters can be reversed.

Recovery

1. Use the rdmod=yes parameter to reset the digit modifiers. Refer to Database Administration - GTT User's Guide for assistance.
2. Re-enter the chg-gtcnv command that generated this error message, specifying a valid combination of parameters. Refer to the command description in Commands User's Guide and to Database Administration - GTT User's Guide for assistance.
   Contact My Oracle Support if this error message appears again. See My Oracle Support (MOS).