1. Deposit service: 10 1, 102, 103, 104, 106, 108,/.
2. Loan services: 20 1, 202, 204, 208, 2 10, 211;
3. Financial services: 30 1, 302, 303, 305;
4. Transfer and remittance services: 40 1, 402, 403, 405, 406, 407, 408, 409, 4 10, 4 12. When you need to fill in the service code, you can find the code of the corresponding service type in the corresponding options to choose or fill in. In addition, some forms may also provide code query function, and you can query according to the prompts. Note that there may be differences between different banks and forms, and the specific filling method needs to be judged and operated according to the actual situation.