Saving a schedule object, throws a java exception

Document ID : KB000102669
Last Modified Date : 21/06/2018
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Issue:
When saving a schedule object (JSCH) using the AWI the following error message is issued:
An unexpected error occurred. Further details are available in the logfiles. 
java.lang.UnsupportedOperationException: used for read only
Cause:
The error in the code, which was causing the java exception has been corrected.
Resolution:
A correction for this issue is available on the following versions:
  • Automation Engine 12.2.0 - currently planned to be released end of June 2018.
  • Automation Engine 12.1.2 - Available
Please install one of the above listed versions or a higher version to resolve this issue.