Omitted Set elements - error D

Domain errors

One can forget to include elements in set declarations.  In turn, when these elements are referenced then an error arises (i.e., an error would occur if the element maketable was omitted from the declaration of set PROCESS but used when data were defined under the PARAMETER PRICE(PROCESS)) and subsequent sets.  GAMS identifies such errors with message $170.  The example shorterr06.gms provides a case where the element maketable is omitted from the set PROCESS.

    6  SET PROCESS   PRODUCTION PROCESSES /makechair,makelamp/

    7      RESOURCE  RESOURCES   /plantcap capacity ,salecontrct contract/;

    8  PARAMETER PRICE(PROCESS)      PRODUCT PRICES BY PROCESS

    9                /makechair 6.5 ,maketable 3, makelamp 0.5/

****                                         $170

   10            Yield(PROCESS)  yields per unit of the process

   11                /Makechair 2   ,maketable 6 ,makelamp 3/

****                                         $170

   12          PRODCOST(PROCESS)     COST BY PROCESS

   13                /Makechair 10  ,maketable 6, Makelamp 1/

****                                         $170

   14          RESORAVAIL(RESOURCE)  RESOURCE AVAILABLITY

   15               /plantcap 10 ,salecontrct 3/;

   16  TABLE RESOURUSE(RESOURCE,PROCESS) RESOURCE USAGE

   17                     Makechair   Maketable  Makelamp

****                                          $170

   18       plantcap         3          2          1.1

   19       salecontrct      1         -1;

Error Messages

170  Domain violation for element