When generating code for referenced models within a top-level Simulink model, you may notice that the fields "Author", "Change Description", and "Date" appear blank. This happens because the tokens "%<Creator>", "%<Description>", and "%<Date>" are not recognized in the code generation templates when used in the context of a referenced model.
To verify which tokens are supported, open the referenced model as the top model and navigate to "Model Settings > Code Generation > Templates > Code templates", then click the "Edit" button next to the source file template. In the opened CGT file (typically "ert_code_template.cgt"), you will find an abstract section listing the supported tokens such as "%<ModelName>", "%<ModelVersion>", and "%<SourceGeneratedOn>". You can use "%<SourceGeneratedOn>" as an alternative for the date. If needed, you may consider hard-coding values for "Author" and "Description" directly into the template as no alternative for them is present.
Finally, if you want to use your original approach with tokens like "%<Creator>", the correct way is to generate code for the referenced model by opening it as the top model. In this case, the tokens will be recognized and populated as expected.
