# How can charm mesons conserve charge?

If a charm meson can change from particle to antiparticle. Then how can charge be conserved if they have different charges. what am i missing?

Only the neutral charm mesons ($${ { D }^{ 0 } }$$ and $$\overline { { D }^{ 0 } }$$) can change from particle to antiparticle, and the neutral charm mesons have no charge.