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TS24.008 10.5.6.12 Traffic Flow Template Table 10.5.162: Traffic flow template information element Number of packet filters (octet 3) The number of packet filters contains the binary coding for the number of packet filters in the packet filter list. The number of packet filters field is encoded in bits 4 through 1 of octet 3 where bit 4 is the most significant and bit 1 is the least significant bit. For the "delete existing TFT" operation and for the "no TFT operation", the number of packet filters shall be coded as 0. For all other operations, the number of packet filters shall be greater than 0 and less than or equal to 15. The array of TLV messages is limited to 16. So, Flow(PDI.SDF_Filter) in PDR is limited to 16. Therefore, we defined the maximum number of flows as 16.