Ventana software support forum

I am having trouble solving an issue related to time steps. I am mapping a production process where the input data is available on a monthly basis but the processing decisions are made on a daily basis.

My problem lies if I use a time step of one month the rates in the system do not react quickly enough to adjust for low inventories (an important measure) and I end up with negative stock. If I use a daily time step, the stock drifts downward instead of the needed sharp adjustment (another important measure).

I have a model in Vensim to explain this behavior if it would be of value.

Thank you for any help

This is probably posted in the wrong section, but here's my solution.

In a similar case I used months for time, but a time step of 1/32 month. Inputs are generated with a modulo funcion:

If then else (modulo (time) = 0, x, 0)
This way input will be read at the start of the month.