Before transport requests are exported, you can perform a check to determine whether they contain critical objects which require approval before they can be transported. This check can be performed on both system and client level. While a transport request is being exported, the target system and the target client are determined. If the transport object checks are active for the relevant client of the target system, the export program checks whether the transport request contains critical objects, or subobjects of critical objects. The export does not take place if the transport request contains critical objects but has to be approved by the change manager.