The maximum allowable agent name is 16 characters.
This is taken from our reference guide:
agent_name: agent
agent
Specifies the name of an agent. This name must match one of the following values:
-The agentname parameter in the agent's agentparm.txt file (on CA WA
Agent for UNIX, Linux, Windows, or i5/OS)
-The ZOSAGENT(name) parameter in the AGENTDEF data set (on CA WA Agentfor z/OS)
Default: WA_AGENT
Limits: Up to 16 characters
You could also take a look at the following link: Agent for HP Integrity NonStop Prerequisites and Installation Options - CA Workload Automation System Agent - 11.3 - CA …