ERROR: A l'iteration ITSUR 0 there are 7 nonmissing observation available. at least 8 are needed

[nassimsa]

Hello

I am working on elasticities true a translog cost function. I used the example on sas to work with my data and i am blocked with the Error below. Please help me find a solution to solve it and continue the program 

here is my program :

173   proc model data = WORK.ER;

174   parameters a_c gcc gcg gcf gch gce gcs gcy

175   a_g ggc ggg ggf ggh gge ggs ggy

176    a_f gfc gfg gff gfh gfe gfs gfy

177   a_h ghc ghg ghf ghh ghe ghs ghy

178    a_e gec geg gef geh gee ges gey

179     a_s gsc gsg gsf gsh gse gss gsy;

180      endogenous sc sg sf sh se ss;

181      exogenous pc pg pf ph pe ps y;

182

183      /*System of Derived Demand Equations*/

184     sc = a_c + gcc*log(pc) + gcg*log(pg) + gcf*log(pf) + gch*log(ph) + gce*log(pe)

185     + gcs*log(ps) + gcy*log(y);

186     sg = a_g + ggc*log(pc) + ggg*log(pg) + ggf*log(pf) + ggh*log(ph) + gge*log(pe)

187    + ggs*log(ps) + ggy*log(y);

188     sf = a_f + gfc*log(pc) + gfg*log(pg) + gff*log(pf) + gfh*log(ph) + gfe*log(pe)

189     + gfs*log(ps) + gfy*log(y);

190     sh = a_h + ghc*log(pc) + ghg*log(pg) + ghf*log(pf) + ghh*log(ph) + ghe*log(pe)

191     + ghs*log(ps) + ghy*log(y);

192      se = a_e + gec*log(pc) + geg*log(pg) + gef*log(pf) + geh*log(ph) + gee*log(pe)

193     + ges*log(ps) + gey*log(y);

194       ss = a_s + gsc*log(pc) + gsg*log(pg) + gsf*log(pf) + gsh*log(ph) + gse*log(pe)

195        + gss*log(ps) + gsy*log(y);

196

197

198       fit sc sg sf sh se ss / itsur converge=0 maxiter=32000;

199

200

201 test "Homogeneity"

202 gcc+gcg+gcf+gch+gce+gcs=0,

203 ggc+ggg+ggf+ggh+gge+ggs=0,

204 gfc+gfg+gff+gfh+gfe+gfs=0,

205 ghc+ghg+ghf+ghh+ghe+ghs=0,

206 gec+geg+gef+geh+gee+ges=0,

207 gsc+gsg+gsf+gsh+gse+gss=0, / lr;

208

209 test "Symmetry"

210 gcg=ggc,

211 gcf=gfc,

212 gch=ghc,

213 gce=gec,

214 gcs=ges,

215 ggf=gfg,

216 ggh=ghg,

217 gge=geg,

218 ggs=gsg,

219 gfh=ghf,

220 gfe=gef,

221 gfs=gsf,

222 ghe=geh,

223 ghs=gsh,

224 ges=gse, / lr;

225

226 test "Joint Homogeneity and Symmetry"

227 gcc+gcg+gcf+gch+gce+gcs=0,

228 ggc+ggg+ggf+ggh+gge+ggs=0,

229 gfc+gfg+gff+gfh+gfe+gfs=0,

230 ghc+ghg+ghf+ghh+ghe+ghs=0,

231 gec+geg+gef+geh+gee+ges=0,

232 gsc+gsg+gsf+gsh+gse+gss=0,

233 gcg=ggc,

234 gcf=gfc,

235 gch=ghc,

236 gce=gec,

237 gcs=ges,

238 ggf=gfg,

239 ggh=ghg,

240 gge=geg,

241 ggs=gsg,

242 gfh=ghf,

243 gfe=gef,

244 gfs=gsf,

245 ghe=geh,

246 ghs=gsh,

247 ges=gse, / lr;

248 run;

WARNING: The option CONVERGE=0 value specified is too small. The option value is reset to CONVERGE=1.49167E-154.

ERROR: A l'itération ITSUR 0 there are 7 nonmissing observations available. At least 8 are needed to compute the next iteration.

249

250

251 OPTIONS NONOTES NOSTIMER NOSOURCE NOSYNTAXCHECK;

[nassimsa]

I found the problem and would like to share it in case someone has the same case. It was because of my data , i analysed from 2011 to 2017 and it was't enough data thats why SAS was saying 7 nonmissing observation available. I then added more data , more years and it worked.