Must have exactly one 'zeebe:taskDefinition' extension element

sinavali · July 7, 2025, 6:41am

i am trying to make a simple service task work, but keep getting this error:

Command 'CREATE' rejected with code 'INVALID_ARGUMENT': Expected to deploy new resources, but encountered the following errors:
'diagram_3.bpmn': - Element: ServiceTask2
    - ERROR: Must have exactly one 'zeebe:taskDefinition' extension element
 [ deploy-error ]

i am using camunda 8 modeler and run on local.

Alex_Voloshyn · July 7, 2025, 6:59am

Hi @sinavali
Have you tried to select a service type implementation?

sinavali · July 7, 2025, 10:36am

i am new to Camunda and i really couldn’t find this sidebar in the Comunda 8 modeler

also should i be alerted about the bottom of the screenshot that said Comunda 7? my Comunda Run is the 8 version.

Alex_Voloshyn · July 7, 2025, 10:43am

You can recreate the process using a BPMN diagram in Camunda 8. After that, click once on the ‘hello’ service task to open the sidebar.

Regards,
Alex

sinavali · July 7, 2025, 11:14am

there was a very shady arrow on the right side of the modeler, easy to miss and it opened the sidebar.
thank you very much.