 decoding order shall contain information for a scalable layer b with layer_id[ b equal to layer_id[i]-directly_dependent_layer_id_delta_minus1[i][j]- - and this information shall not contain a value of ayer_dependency_info_src_layer_id_delta[i]equal to 0. Let setOfDepLayers be the set union of the representations of the scalable layers b that have layer_id[ b ] equal to layer_id[ -directly_dependent_layer_id_delta_minus1i][j]- - 1, with 0..num_directly_dependent_layers[ When layer_dependency_info_present_flag[i]is equal to 1, the set setOfDepLayers shall not contain any scalable layer, on which the current scalable layer does not directly or indirectly depends inside the target access unit set and the current scalable layer shall not depend on any scalable layer, inside the target access unit set, that is not included in the set setOfDepLayers. layer_dependency_info_src_layer_id_delta_minus1[i]indicates that the current scalable layer has the same layer dependency information as the scalable layer with layer identifier equal to layer_id[i] Rec. ITU-T H.264 (01/2012) ayer_dependency_info_src_layer_id_delta_minus1[i]-1 value ayer_dependency_info_src_layer_id_delta_minus1[i] shall be in the range of 0 to layer_id[i]-1, inclusive. The most recent scalability information SEI message in decoding order shall contain information for a scalable layer b with layer id| equal to layer_id[i]-layer_dependency_info_src_layer_id_delta_minus1[i]-1 - and this information shall not contain a value of ayer_dependency_info_src_layer_id_delta[b ] equal to 0. When yer_dependency_info_present_flag[i is equal to 0, the set of scalable layers on which the current scalable layer depends inside the target access unit set shall be identical to the set of layers on which the scalable layer b with layer_i b equal to d[i]-layer_dependency_info_src_layer_id_delta_minus1[i] - - 1 depends inside the target access unit set. G.13.2.7 Scalable nesting SEI message semantics The scalable nesting SEI message provides a mechanism for associating SEI mes