 primary coded VCL NAL units with no_inter_layer_pred_flag equal to 0 of the current scalable layer representation, the reference layer representation (specified by the syntax elements ref_layer_dq_id) that is used for inter-layer prediction in the decoding process, as specified in clause G.8, is the same as the reference layer representation that was used during encoding. exact_inter_layer_pred_flag[i equal to 0 indicates that, for the primary coded VCL NAL units with no_inter_layer_pred_flag equal to 0 of the current scalable layer representation, the reference layer representations that are used for inter-layer prediction in the decoding process may or may not be the same as the reference layer representations that were used during encoding. NOTE 8 - A mismatch between the reference layer representation that is used for inter-layer prediction in the decoding process and the reference layer representation that was used during encoding may be a result of a bitstream adaption, in which one or more layer representations that are referred to in inter-layer prediction are removed from the bitstream, any of the primary coded VCL NAL units that refer to any of the removed layer representations by inter-layer prediction is not removed from the bitstream, and the value of the syntax elements ref_layer_dq_id in the primary coded VCL NAL units that refer to any of the removed layer representations is modified in order to obtain a bitstream conforming to this Recommendation | International Standard. exact_inter_layer_pred_flag[ i ] should be equal to 1. When the current scalable layer representation does not contain any primary coded VCL NAL unit with no_inter_layer_pred_flag equal to 0, exact_inter_layer_pred_flag| i shall be equal to 1. exact_sample_value_match_flag| indicates whether the values of decoded samples for decoding the representation of the current sub-picture scalable layer (when sub_pic_layer_flag[ is equal to 1) or any particular IROI within the current scalable layer representation (when iroi_division_inf