# Troubleshooting ### I get 503 Service unavailable error in production All planned and unplanned outages in the production environment are communicated via our [Telegram channel](https://t.me/notifyteos). We recommend you subscribe to be notified about all status updates. ### I get 503 Service unavailable error in the development environment All planned and unplanned outages in the development environment are communicated via our [Teams channel](https://teams.microsoft.com/l/team/19%3a7c74fdd4eda14673832c20b8f43e28f9%40thread.tacv2/conversations?groupId=77776e97-6a15-4726-b116-0331e989db66\&tenantId=aca70c4c-6fac-413e-9e55-3ae922e34bf8). We recommend you subscribe to be notified about all status updates. ### I get an authorization error when calling any method of the TEOS API with the API key If it has never worked for you before, please, contact your CoreLedger manager. ### I get some errors that are not clear to me Please check our [Handling errors](/overview/handling-errors.md) page. Most likely you will find the answer there. If not, you're welcome to report an issue in our [GitHub Repository](https://github.com/CoreLedger-TEOS/API). ### I have a blocker that is critical for my project and blocks my solution from functioning We offer you support according to the contract signed. If you have bought an option to get exclusive support, you are welcome to contact your CoreLedger manager. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://teos-docs.coreledger.net/troubleshooting.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.