SAP Business One

SAP Business One Service Layer API

RESTful OData v4 API for SAP Business One on HANA exposing nearly all business objects (business partners, items, orders, invoices, journal entries, inventory, production) for POST/GET/PATCH/DELETE operations. Authentication is session-based via POST /Login returning a B1SESSION cookie scoped to a specific company database.

Documentation GitHub

Documentation

https://help.sap.com/doc/056f69366b5345a386bb8149f1700c19/10.0/en-US/Service%20Layer%20API%20Reference.html

https://learning.sap.com/courses/leveraging-the-sap-business-one-service-layer/introducing-service-layer-api-terms-and-documentation

Other Resources

https://sap.highwaytwo.com/

https://raw.githubusercontent.com/api-evangelist/sap-business-one/refs/heads/main/apis.yml

OpenAPI Specification