What are the order requirements for type_map in DPGEN's param.json file?

[Tong-Zhou223]

In the current version, If DPGEN uses two systems for training, one POSCAR element order C, N, H, O, and one POSCAR element order H, O, how should I write the type_map element order in the param.json, are there any requirements for this?

[njzjz]

There is no requirement for the order of type_map.