I keep having error 66 and 256 consequently… I will appreciate your help. Thank you very much… In the model I need to minimize the maximum of something, you will see in the code below Untitled_6.gms (1.76 KB)
error 66: The symbol shown has not been defined or assigned
When you look into the lst file, you will find the following error message:
66 solve data_envelopment using lp minimizing M;
**** $66,256
**** 66 The symbol shown has not been defined or assigned
**** A wild shot: You may have spurious commas in the explanatory
**** text of a declaration. Check symbol reference list.
**** 256 Error(s) in analyzing solve statement. More detail appears
**** Below the solve statement above
**** The following LP errors were detected in model data_envelopment:
**** 66 equation normalization.. symbol "y" has no values assigned