Discontinuing support for JSON-RPC and global HTTP batch endpoints

Google announced the discontinuation of support for JSON-RPC and Global HTTP Batch endpoints due to a shift toward a more distributed, high-performance architecture that no longer supports these global endpoints. Originally scheduled for March 25, 2019, the deprecation was extended to August 12, 2020, to accommodate affected customers who may not have received prior notifications. The change requires developers to migrate from these deprecated features, with specific guidance provided for various programming languages, including updates to Google API Client Libraries to work with REST client libraries instead. Furthermore, Google scheduled periodic error injections from February to August 2020 as part of the transition process to help developers identify dependencies on the deprecated features and ensure a smooth migration. Developers are advised to switch to non-global HTTP batch endpoints, update client libraries to supported versions, and ensure their code does not explicitly reference the deprecated global endpoints.