Otherwise I cannot run the estimation. With an extended model which includes more parameters it seems to be necessary to also exclude more parameters from the estimated params command
I meant: what is the problem/error message you encountered that required you to fix parameters. Typically, that is only valid if there are identification problems.
Dear Professor Pfeifer,
the error message I get is:
Log data density [Laplace approximation] is NaN.
Error using chol […]
If I interpret correctly, the error message indicates that there is an identification problem.
That message in itself can have various reasons. More careful debugging is needed.
I see. Thank you very much for your help, Professor !