Other common errors

Many types of errors are possible in GAMS.  I cannot cover each one.  Thus, I list a set of common errors as well as an indication of what types of GAMS error messages they cause.

Excess or insufficient semi colons - error B

Spelling mistakes - error C

Omitted Set elements - error D

Indexing problems - error E

Summing over sets already indexed - error F

Neglecting to deal with sets - error G

Mismatched parentheses - error H

Improper equation ".." statements - error I

Entering improper nonlinear expressions - error J

Using undefined data - error K

Improper references to individual set elements - error L

No variable, parameter, or equation definition - error M

Duplicate names - error N

Referencing item with wrong set - error O