If you are migrating across multiple releases, you may find it helpful to consult the migration instructions for the intervening releases, as well. Starting with the 2019 R2 release, migration guidance for command-line System Coupling has been published in the System Coupling User's Guide. To access this documentation:
Go to the System Coupling page of the online Ansys Help site.
At the upper-right corner of the window, select the appropriate release from the menu.
Under Documentation, open the System Coupling User's Guide.
Use the search field to locate the "Migrating Command-Line System Coupling Scripts" section.