Customers are experiencing API documentation import failures with large OpenAPI specifications, even when the files are within the 25 MB size limit. For example, a 19 MB specification containing 2,053 operations and 230 tags fails during import due to high memory consumption while expanding schemas and generating articles. The UI displays a generic validation error, while the browser console shows a 503 response. We request optimizing memory usage during schema expansion, article generation, and URL processing to support large specifications reliably. The improvement should also ensure that subsequent resynchronization works without failures. Currently, customers must split their specifications into separate API references as a workaround.