Change Commands

At least one parameter must be changed in the change commands. Parameters that are considered part of the search key must be specified in every chg command (for example, the ni, nc, ncm, zone, area, id, npc, msa, ssa, and sp parameters for the chg-scr-opc command). Each of these parameters has a corresponding “new” parameter (for example, nni, nnc, nncm, nzone, narea, nid, nnpc, nmsa, nssa, nsp) which may be specified in order to change the entry in the screening table. Parameters that are not part of the search key may be specified, but do not have “new” values. For example, the nsfi, nsr, ri, and actname parameters do not have “new” parameters (for example, nnsfi, nnsr, nri, or nactname). If a “new” parameter is not specified, it assumes the value of the corresponding search key parameter. For example, if the nni parameter is not specified, then the ni parameter does not change since the nni parameter assumes the value of the ni parameter. If, however, a “new” parameter is specified, it must follow the same rules as the search keys. For example, if the nni and nncm parameters are not specified, and the nnc parameter is specified as an “*” (asterisk), then the ncm parameter must be an “*” (asterisk). The new data must not already exist in the screening table. If an entry already exists which matches the new data, the command is rejected.