Error Messages:

Since different projections my have the same error but different error
code numbers, duplicate descriptions occur.

code	Corresponding Message
----	---------------------
2	"Convergence error"
3	"Latitude failed to converge after 15 iterations"
4	"Latitude failed to converge"
5	"Illegal source or target unit code"
6	"Output file name not specified"
11	"Illegal zone number"
21	"Illegal zone #<zone_code> for spheroid #<sph_code>"
22	"Error opening State Plane parameter file"
23	"Illegal spheroid #<sph_code>"
31	"Equal latitudes for St. Parallels on opposite sides of equator",
41	"Equal Latitudes for St. Parallels on opposite sides of equator",
44	"Point can not be projected"
53	"Transformation cannot be computed at the poles"
81	"Standard Parallels on opposite sides of equator"
93	"Point projects into infinity"
95	"Latitude failed to converge"
103	"Point projects into infinity"
113	"Point projects to a circle of radius = <radius>"
115	"Input data error"
123	"Point projects into a circle of radius = <radius>"
125	"Input data error"
133	"Point projects into infinity"
143	"Point can not be projected"
145	"Input data error"
153	"Point cannot be projected"
155	"Input data error"
164	"Input data error"
174	"Input data error"
201	"Input data error"
202	"Input data error"
205	"Point projects into infinity"
214	"50 iterations without convergence"
234	"Too many iterations in inverse"
235	"Too many iterations in inverse"
236	"Too many iterations in inverse"
241	"Iteration failed to converge"
251	"Iteration failed to converge"
252	"Input data error"
1101	"Incompatable unit codes"
1116	"Illegal DMS field"