The System Severity List (SSL) will be initially provided by BT and shall be the basis for the FMECA. The Supplier shall provide an updated SSL when changes are made and agree with BT about the added failure scenarios and consequences.APPENDIX - SSL Template"A Reliability Analysis shall be used to allocate and predict the target reliability requirements for the system, broken down into sub-parts (at minimum LRU level). The Breakdown analyses shall be included in the FMECA (BLESS (Supplier Web Portal) / Unilife (or UNILIFE model or LSA database))