To understand , you must first understand how Microsoft versions its Integration Services components. SSIS is not a standalone product; it is a component of SQL Server. Therefore, every update to SQL Server—be it a Service Pack (SP), Cumulative Update (CU), or General Distribution Release (GDR)—updates the SSIS runtime and the ISServerExec.exe executable.
Version mismatches often affect connection managers. Instead of hard-coding SQL 2019 features (like TRIM in derived columns) that may not exist on a SQL 2017 backend, use SSIS parameters and project-level connection managers. The error is about the runtime engine , but you can reduce your need to upgrade by keeping package logic backward compatible. ssis 275
: Accessing web services or third-party APIs that do not have native SSIS connectors. To understand , you must first understand how