https://skmtc.net/reflexpay/apis/flex-merchant-api/docs/merchant/payment-request/get 2026-07-13 0.5 https://skmtc.net/reflexpay/apis/flex-merchant-api/docs/merchant/payment-request/post 2026-07-13 0.5 https://skmtc.net/reflexpay/apis/flex-merchant-api/docs/merchant/payment-request/:reference/get 2026-07-13 0.5 https://skmtc.net/reflexpay/apis/flex-merchant-api/docs/merchant/payment-request/:reference/cancel/post 2026-07-13 0.5