Had the same error. Turns out I was setting a parameter to an invalid value. I was trying to set a queue item’s priority to “Medium” but the option allowed for the equivalent meaning was “Normal”. Once I changed the API call to pass “Normal” as the priority value, the request went through.
I fixed it. There was a folder id which needs to be passed as Organization Unit ID. In cloud orchestrators, unlike legacy platform orchestrators, the folder id was just one id whereas in the cloud model , u have default and shared folders, making the api to fail if you dont specify folder. I got the folder id for the orchestrator and was able to fix the issue.