Total System Services Total System Services Inquiries API Look up transaction status Documentation GitHub OpenAPI Documentation 📖 Documentation https://developers.tsys.com/ 📖 Documentation https://www.tsys.com/platform 📖 Documentation https://docs.tsysmerchant.com/ Specifications ⚙ OpenAPI https://raw.githubusercontent.com/api-evangelist/total-system-services/refs/heads/main/openapi/total-system-services-inquiries-api-openapi.yml