External Task Worker cannot find Id

I try to work with the Camunda REST API and I want to fetch & lock a task and then complete that manually.

I think fetch & lock works:

When I make the rest complete call, I just get the following message (workerId is the same):
{“type”:“RestException”,“message”:“External task with id 8aefc52f-00e6-11ec-afd2-00155d421119 does not exist”}

Thanks in advance!!

Hi @svenr,

the external task ID from the error message didn’t match the one from the screenshot.

Look at the last digits of the first octet.

Hope this helps, Ingo

thank you!

I found my mistake. I used the processInstanceId instead of the task id… my fault!