Hi
Aadi •,
Welcome to Microsoft Q&A forum.
As I understand, the input authorization token can't serve the request. The wrong key is being used or the expected payload is not built as per the protocol error.
Could you please share more information about the API of the Azure Cosmos DB, how keys are created and id stored in Key Vault?
Code sample would help to understand the issue.
Also, if this code has "resourceLink", try to change it to "resourceId" and see if this works.
Please share all important information to enable us to assist you.
Thanks