How can we resolve the error caused by - Dictionary entry value class 'DATA.Signal' is undefined ?

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When I am trying to open a Data Dictionary File ( .sldd) of a Component Model in 2019b, I am getting the following error :
Failed to open file 'C:\Users\xxx\xxxxx\xxxxx.sldd'
Caused by:
  • Dictionary entry value class 'DATA.Signal' is undefined.
Component:Simulink | Category:Model error
Is the error in '**.sldd' file ? How can I fix this error ?

Answers (1)

Fangjun Jiang
Fangjun Jiang on 25 Jan 2023
Edited: Fangjun Jiang on 25 Jan 2023
It seems like DATA.Signal is a customized class, for example, built on top of the Simulink.Signal class. Or, it could be a class provided by a toolbox.
In any case, there are some files installed in the MATLAB path to define the class. You need to trace back to the source/owner of the .sldd file and ask about those files.


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