Warning: File 'codedescriptor.dmr' not found. Simulink Coder Build

Building Simulink Real-Time models in 2020B. During the build I get the following Warning:

Warning: File 'codedescriptor.dmr' not found.

This is for a reference model. The warning recurs 4 times. Not sure where to begin looking as I have never seen the file 'codedescriptor.dmr' anywhere. Is this some kind of artifact from upgrading a model from older versions of Simulink? Is there any way to resolve this warning and/or suppress it? It does not seem to have any noticable effect on the behavior of the model.

Answer 1

[Youssef Noureddine]

These warnings normally appear when an unrelated 'codedescriptor.dmr' file is found on the search path during the model build stage. Please refer to the MATLAB Answers link below for more information:

https://www.mathworks.com/matlabcentral/answers/1942974-why-do-i-get-warnings-about-file-codedescriptor-dmr-not-found-for-each-of-my-referenced-models