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When running a calibration study, the following error message occurs:
"An error occurred when trying to calculate or validate the model. Please check the model for errors"
OR
When computing Darwin Calibrator with customer meters associated with pipe elements the user notification "An error occurred when trying to calculate or validate the model. Please check the model for errors." is generated.Problem ID#: 84769
1) One cause of this error is unexpected formatting in the data for the calibration study. Carefully review the data to make sure it is correct and the formatting is correct. For instance, if you have a pump setting in the Boundary Override tab that is negative, this will cause an error message.
2) Another possible cause is Customer Elements not associated with an element. This is currently being worked on and will be fixed for an upcoming version of the software (# 710678). The workaround is to fix these cases:
1) Create a query for Customer Meter and configure it like this: Demand_AssociatedElement IS NULL
2) Run the query, right click in the drawing and choose Edit Group, then select the Customer Meter flextable. From here, you can right click the row header of each to zoom to, and then assign the associated element.
Alternatively, select this query in the Network Navigator tool, click the highlight button, then zoom and pan around and fix the offending customer meters.
3) Run Darwin Calibrator again
You can also to use the following steps to assign the customer meters to the nearest node element (junction, hydrant) in bulk:
1) Open Loadbuilder and create a new Loadbuilder run2) Choose the option at the bottom of the first window to where it states "Customer Meter load data" and choose the Nearest Node method located on the right side of the window.
3) Choose the node layer as a selection set the users have if they only want to assign the meters to certain nodes or choose "Junction/All Elements".
4) Choose the Customer Meter Layer "Customer Meter/All Elements" and keep the check box for exclude unconnected "Customer Meters that already have a valid Associated Element" unchecked.
5) Choose to update the existing alternative and select the alternative name. Add a Label to name the Loadbuilder run.
Using Darwin Calibrator