It means your UVs are overlapped and it cause some glitches in the baked shadows.To avoid that create a second UV SEt inside your modeling software ( Maya/Max Etc),and be sure to use non overlapped uv layout in this second uvSet.
It means your UVs are overlapped and it cause some glitches in the baked shadows.To avoid that create a second UV SEt inside your modeling software ( Maya/Max Etc),and be sure to use non overlapped uv layout in this second uvSet.