Model is underconstrained.
The following variables couldn't be defined:
 * k_L1 in component cytosolic_Ca_uptake
 * J_L1 in component cytosolic_Ca_uptake
 * Ca_o in component cytosolic_calcium
 * v_i in component cytosolic_calcium
 * Ca_i in component cytosolic_calcium
 * J_P1 in component cytosolic_Ca_release
 * k_P1 in component cytosolic_Ca_release
 * K_L2 in component internal_store_Ca_release
 * J_L2 in component internal_store_Ca_release
 * k_L2 in component internal_store_Ca_release
 * k_P2 in component internal_store_Ca_uptake
 * J_P2 in component internal_store_Ca_uptake
 * v_s in component internal_store_calcium
 * Ca_i_ss in component cytosolic_calcium
 * Ca_s_ss in component internal_store_calcium
 * d/dt Ca_i in component cytosolic_calcium
 * d/dt Ca_s in component internal_store_calcium