Section: 7.9.2 Delete PDN Connection Set Response
Content: This message is sent as a response to the Delete PDN Connection Set Request. Table 7.9.2: Information Elements in a Delete PDN Connection Set Response TEID of 0 shall be used for the Delete PDN Connection Set Response. The following Cause values are defined: - "Request Accepted" - "Request rejected" - "System failure". - "Mandatory IE incorrect". - "Conditional IE missing". - "Invalid message format". "Request Accepted" indicates the receiving node was capable of storing a CSID value for each PDN connection for the type of node (MME, SGW, PGW, TWAN or ePDG) in the Delete PDN Connection Set Request and has marked, or will mark immediately, the PDN connections for deletion as specified in 3GPP TS 23.007[ Restoration procedures ]  [17]. "Request Accepted" shall be returned even if there are no PDN connections that match. "Request rejected" shall be used when the receiver of the Delete PDN Connection Set Request is not capable of storing at least one CSID value per PDN connection for the type of node (MME, SGW, PGW, TWAN or ePDG) received in the Delete PDN Connection Set Request. The SGW shall respond to the Delete PDN Connection Set Request independently, i.e. without waiting for replies.