Error codes

List of possible error codes returned by the api.

Please note that error codes in the 500 series are returned directly by Google's NotebookLM. We have developed a workaround for some of them, only available to PRO subscribers.

Code	Description
0	Not set
100	Internal error
201	Subscription expired
202	Subscription limit reached
301	Invalid output type
302	Invalid resource type
501	Google's NotebookLM: Invalid resource
502	Google's NotebookLM: Error fetching URL
503	Google's NotebookLM: Restricted source. Resolved for PRO subscribers.
504	Google's NotebookLM: Paywalled source. Resolved for PRO subscribers.
505	Google's NotebookLM: Resource not found
506	Google's NotebookLM: Url not reachable
507	Google's NotebookLM: Resource empty
508	Google's NotebookLM: YouTube transcription not available
509	Google's NotebookLM: Resource not imported