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Detect ambiguous custom storage class final values

Diagnostic behavior when Reusable storage class has multiple endpoints

Model Configuration Pane: Diagnostics / Data Validity


This parameter specifies the diagnostic behavior when a model contains a Reusable storage class that has more than one endpoint. An endpoint is a usage of a Reusable storage class with no other downstream usages.

If your model contains aReusable storage class that does not have a unique endpoint, the run-time environment must not use the variable value because the value is ambiguous. If the run-time environment must use the final value of a signal that uses the Reusable storage class specification, set this parameter value to error.

To resolve the error, remove the Reusable storage class specification from the endpoints until the storage class has only one endpoint. For example, in this model, the final value of the Reusable storage class RCSC_1 is ambiguous because RCSC_1 has two endpoints. If you remove the specification from the Sum block output signal or from the output signal of the Bias block connected to the Outport block with a port index of 1, then the storage class RCSC_1 has only one endpoint.


To enable this parameter, set System target file to ert.tlc.


warning (default) | error | none

The software issues a warning.


The software issues an error and terminates the simulation.


The software does not issue a diagnostic.

Recommended Settings

DebuggingNo impact
TraceabilityNo impact
EfficiencyNo impact
Safety precautionerror

Programmatic Use

Parameter: RCSCObservableMsg
Type: string | character vector
Values: 'none' | 'warning' | 'error'
Default: 'warning'

Version History

Introduced in R2017b