# 4.3. Common APIs

- [4.3.1 Inquiry Payment](/newpay-api-document/4.-apis-v1-deprecated/4.3.-common-apis/4.3.1-inquiry-payment.md)
- [4.3.2 Refund](/newpay-api-document/4.-apis-v1-deprecated/4.3.-common-apis/4.3.2-refund.md)
- [4.3.3 Inquiry Refund](/newpay-api-document/4.-apis-v1-deprecated/4.3.-common-apis/4.3.3-inquiry-refund.md)
- [4.3.4 Pre Payment](/newpay-api-document/4.-apis-v1-deprecated/4.3.-common-apis/4.3.4-pre-payment.md)
- [4.3.5 Query User](/newpay-api-document/4.-apis-v1-deprecated/4.3.-common-apis/4.3.5-query-user.md)
- [4.3.6 Transfer](/newpay-api-document/4.-apis-v1-deprecated/4.3.-common-apis/4.3.6-transfer.md)
- [4.3.7 Query Transfer Order](/newpay-api-document/4.-apis-v1-deprecated/4.3.-common-apis/4.3.7-query-transfer-order.md)
- [4.3.8 Order Confirmation](/newpay-api-document/4.-apis-v1-deprecated/4.3.-common-apis/4.3.8-order-confirmation.md)