You didn't ask a question, but
1. If you are asking why the model didn't converge, the most likely reason is that the model does not fit the data and/or you did not provide a good initial guess for the parameters.
2. If you are asking what to do about it, then
2a. Make a better initial guess for parameters
2b. Change to a different optimize, such as TECH=NMSIMP or TECH=NRRIDG
2c.If you believe the model is almost converging, you can increase the number of iterations and the number of function evaluations that are permitted: MAXITER=500 MAXFUNC3000.