CA WA Agent not starting after install

Document ID : KB000076835
Last Modified Date : 16/10/2018
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After the installation of CA WA Agent, the agent does not start and shows the following errors in the logs:
cybermation.library.communications.CybConversationException: Error sending message. Undecipherable acknowledgement 
CA Workload Automation Agent 11.3 / 11.4
The encryption key between the CA WA Agent and the manager (scheduler) must match and be of same type.
Enter the same key that on the manager side that was entered during the CA Agent install.
Also, make sure the Agent name, port, and encryption type (E.g. DES, AES) matches on the Manager side.

Note:  Do not add the 0x before the  encryption key in the Manager side.  Only add the alphanumeric characters after 0x in the Topology.