Section: 7.9.1 Delete PDN Connection Set Request
Content: This message may be sent on the S2a, S2b, S5, S8, or S11 interfaces as specified in 3GPP TS 23.007[ Restoration procedures ]  [17]. Table 7.9.1-1: Information Elements in a Delete PDN Connection Set Request TEID of 0 shall be used for the Delete PDN Connection Set Request. Only one type of FQ-CSID shall be included in each Delete PDN Connection Set Request, A mix of different types, such as SGW-FQ-CSID and PGW-FQ-CSID shall not be used. A combined node, such as a collocated PGW/SGW, shall send separate Delete PDN Connection Set Request for the PGW role and one for the SGW role if a partial fault impacts more than one role.