GAMS

Error Message

Potential Causes Discussion

   Common Cause of Error

8

  H  

Mismatched parentheses-too many "(" found

36

  I  

Missing elements in equation definition

37

  I  

Missing equation type ("=L=", "=E="  "=G=")  in equation specification

51-60

  J  

Illegal nonlinear specification

66

  K  

Item which has not been given numerical data appears in equation

71

  I  

Equation has been declared, but not algebraically specified with ".." statement

96

  B  

A statement ended and another began but no ; was included.

120

 C, L

Cannot find a set with this name -- often a set element is referenced without properly being enclosed in "

125

  F  

Set is already in use in a sum or an equation definition

140

 C,  K , M

GAMS looking for a keyword or declared element and cannot find it.  Check spelling and declarations.

141

  K  

Parameter without data used, or SOLVE does not proceed .L, and .M references

148

  E  

Item referenced with more or less indexed sets than in declaration

149

 G, L

The set identified is not indexed either in a sum or an equation definition

170

 C, D

Set element referred to cannot be found in set defined for this index position, check for misspelling, omissions, and references to wrong set

171

 E,  L, O

A domain error, Wrong set being referenced for this index position

195

  N  

Name used here duplicates that of an already defined item

198

P

Using ORD on a set that is not ordered

256

 I,  J,  K

Something wrong with model specification.  Look for other error messages immediately after solve statement

257

A-N

Solver not checked.  Happens in conjunction with any GAMS error

340

  L  

Quotes likely forgotten around a specific set reference

408

  H  

Mismatched parentheses-too many ")" found