Section: 14.2 Detection of Bearer Context Mismatch
Content: Bearer Context mismatch can be detected by a receiving GTP-C entity in the following cases: - when at least one dedicated bearer context in the request message is unknown; or - when at least one dedicated bearer context is missing in the request message in comparison to the bearer contexts stored; or - when receiving a response message indicating that one of the dedicated bearer context(s) was unknown, by using the cause code "Context not found" at the Bearer Context level. See also clause 8.4. The Modify Bearer Request/Response and the Modify Access Bearer Request/Response in particular enables an easy detection of bearer contexts mismatch since all the bearer contexts, either of the PDN connection for a Modify Bearer Request/Response or of all the UE's PDN connections for a Modify Access Bearer Request/Response, need to be included in the messages.