Image Analysis activity fails with error code DAP-RT-1101

Help Activities
1

Hi Experts

I am building an automation that uses the Image Analysis activity to determine if the contains any handwritten notes.

So far my automation has worked without any problems. But when running it today I keep getting this error when it comes to the Image Analysis activity that I am using in a subflow:

Image Analysis: Request failed with error: 
ProviderMessage : error - {message=Invalid content type. image_url is only supported by certain models., type=invalid_request_error, param=messages.[1].content.[1].type, code=null}
ProviderErrorCode : 400
RequestId : 6a59c11ee4b08c7396490d66
Message : Bad Request

Status code: BadRequest. Error code: DAP-RT-1101.

I have not changed anything in my subflow so not sure why it is now failing. The input is a .png image and I am using the model ‘gpt-5.4-2026-03-05’.

One thing I noticed though, I tried to drag the Image Analysis activity into my flow again which seemed to trigger some updating. The old activity had a variaty of additional settings in the Properties pane that the “new” activity does not have. I have tried upgrading all my dependencies to the latest versions but that did not solve it.

Any ideas what might be causing this?

2

Seems to be a model issue. Tried switching to gpt-5.5-2026-04-23 and then it works. But I think that model is more expensive than then gpt-5.4-2026-03-05.