Working on A2A protocol integration on the Camunda Platform and trying this solution on cluster version “Camunda 8.9.0-alpha1”.
Implemented this A2A protocol on the use-case of booking hotel/rooms and invoking this agent from the Camunda platform via “Travel Planner Agent”.
Implemented the solutions on both the Agentic Patterns and facing the same error in both cases:
- AI Agent Task connector with loop and ad-hoc sub-process
- AI Agent Sub-process
Error - java.lang.IllegalArgumentException: Text cannot be null or empty
Facing error when A2A communication is happing and connector is trying to send operation command “sendMessage”.
We having below questions on this integration:
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To leverage the use of A2A protocol in Camunda Agentic Workflow - what is the minimum required version of the cluster?
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Noticed in the agentContext and agent variables, for operation “sendMessage” - valid query text is available, but still getting the error. Is there something different connector or connector versions is required to resolve this issue.
Please find the complete details and screenshots for reference on the same:
- AI Agent Task connector with loop and ad-hoc sub-process
2. AI Agent Sub-process
