Error in 'To virtual Bus' when adding a signal to a Bus used in the reference model

I manage the bus within the SLDD file.

After adding a signal to the bus used in the model reference, an error occurs when I click code generation:

"Error: The interface information in the saved model file for model 'MRef1' is different than the information in the updated diagram. Save the model to resolve the inconsistency."

(If I do an 'update diagram', the error does not occur.)

However, if I slightly move the position of the 'To Virtual Bus' block and generate the code, it works normally.

Is there any additional step I need to perform before running code generation after adding a signal?

Answer 1

[Angelo Yeo]

Such issues occur when the model is generated with an older version or library network and then invoked in a newer top-level model. This is a known limitation due to Simulink's architectural choices when using bus element ports with model references.

Such errors may arise when older versions are integrated into newer top-level models. To resolve this, you can try the following steps:

1. Open the top-level model
2. Open the referenced model as a top-level model. Update the referenced model and save it.
3. Update the top-level model.

You should be able to generate the code after the steps above. However, if the issue still persists, please reach out to technical support: Contact Support - MATLAB & Simulink