Hi @nagamaddikunta,
Having checked this internally, this error message doesnโt come from the QPM/TPM values you see on the Serving endpoint. It means that, for your workspace, Databricks has set the system-level quota for that model to 0, so the GPT-5.4 endpoint is effectively disabled regardless of the endpoint-level limits you configure.
On Enterprise trial workspaces (including the $400 free-credits trial), some of the higher-end โGPT-5.xโ style models are not enabled by default. Thatโs why things worked in the original Playground context, but you now see this error after moving to the Enterprise trial workspace.
Unfortunately, thereโs nothing you can change in the UI to fix this. The next step is to note your workspace ID and the endpoint name (e.g., databricks-gpt-5-4) and either open a Databricks Support ticket from your workspace or, if you have an account team, ask them to check the workspace and, if eligible, enable GPT-5.4 / adjust the system-level quota for it.
In the meantime, you should still be able to use other models that are allowed on trials (for example, the Llama / DBRX family) from the AI Playground and Serving.
If this answer resolves your question, could you mark it as โAccept as Solutionโ? That helps other users quickly find the correct fix.
Regards,
Ashwin | Delivery Solution Architect @ Databricks
Helping you build and scale the Data Intelligence Platform.
***Opinions are my own***