# SAP Business One — Accounting API: overview > Canonical URL: https://developers.apideck.com/apis/accounting/sap-business-one/overview SAP Business One is an ERP solution for small and midsize businesses, providing a single application to manage business partners, financials, sales, inventory, and operations. - Status: beta - Authentication: apiKey - **account type required:** SAP Business One 10.0 or later (version for SAP HANA or Microsoft SQL Server) with the Service Layer installed. - **apideck credentials available:** false - **apideck credentials note:** Each consumer connects their own SAP Business One Service Layer with their own SAP user. - **authentication note:** Session login with the consumer's SAP Business One user name and password; not OAuth. - **beta:** true - **consumer access level:** A dedicated SAP Business One user whose authorizations cover the synced modules (business partners, sales, purchasing, financials). - **costs:** Service Layer access carries no separate SAP fee; it is included with SAP Business One. - **difficulty:** highly_complex - **difficulty reason:** Custom Auth + Per-Consumer Network Setup (Public HTTPS Service Layer, CA-Signed Certificate) - **environment notes:** - **description:** Every connection targets the consumer's own Service Layer and company database, so a test company and a live company use the same kind of credentials (SAP user name and password). The company database name decides which data a connection reads and writes. - **environment:** Single environment - **description:** Besides Apideck's temporary shared demo company (see the Sandbox row), a consumer can test against a test company database on their own server, for example a copy of production or an SAP demo database. A live company database holds real financial data, and the connector creates, updates and cancels documents, so treat anything it touches as production data. - **environment:** Testing - **external guides:** - **source:** SAP - **title:** Working with SAP Business One Service Layer - **url:** https://help.sap.com/doc/fc2f5477516c404c8bf9ad1315a17238/10.0/en-US/Working_with_SAP_Business_One_Service_Layer.pdf - **important to know:** Apideck must reach the consumer's Service Layer over the public internet: HTTPS with a CA-signed certificate (self-signed certificates are rejected) and a firewall that allows Apideck's egress IPs. On-premise installs usually need a reverse proxy in front of the Service Layer. The connection runs as one SAP Business One user: changing that user's password, locking it or removing its authorizations breaks the connection until the consumer updates it in Vault. One connection can cover several SAP company databases: a per-request override targets a company other than the one saved on the connection, but the same SAP user, with its authorizations, must exist in every company database. - **partnership required:** false - **rate limits:** SAP publishes no Service Layer rate limit; throughput depends on the consumer's own Service Layer sizing and configuration. - **responsibility matrix:** - **area:** Enable the SAP Business One Connector - **customer:** ✓ Via Apideck Dashboard - **apideck:** ✓ (provides access) - **area:** Request Apideck's Temporary Shared Sandbox for Testing - **customer:** ✓ - **area:** Expose the Service Layer over HTTPS with a CA-Signed Certificate & Allowlist Apideck's Egress IPs - **consumer:** ✓ - **area:** Create a Dedicated SAP Business One User with the Needed Authorizations - **consumer:** ✓ - **area:** Enter the Service Layer URL, Company Database & Credentials in Vault - **consumer:** ✓ - **apideck:** ✓ - **area:** Log In to the Service Layer & Renew the Session - **sandbox available:** true - **sandbox note:** Apideck shares temporary access to its SAP Business One 10.0 demo company (SBODEMOUS) on request; SAP hosts no developer sandbox. - **sandbox url:** https://help.apideck.com/en/articles/7774658 - **supported resource categories:** - **name:** Core Financial - **resources:** ledger-accounts tax-rates journal-entries tracking-categories bank-accounts - **name:** Accounts Receivable - **resources:** customers invoices invoice-items credit-notes payments quotes sales-orders - **name:** Accounts Payable - **resources:** suppliers bills bill-payments purchase-orders expense-categories - **name:** Organization - **resources:** departments employees - **webhooks:** No webhooks — read the list endpoints to pick up changes. ## Supported resources [Accounting data model](/guides/accounting-data-model.md) - **custom field support:** true - **downstream id:** business-partners - **downstream name:** Business Partners - **id:** customers - **name:** Customers - **status:** live - **custom field support:** true - **downstream id:** suppliers - **downstream name:** Suppliers - **id:** suppliers - **name:** Suppliers - **status:** live - **custom field support:** true - **downstream id:** invoices - **downstream name:** Invoices - **id:** invoices - **name:** Invoices - **status:** live - **custom field support:** true - **downstream id:** purchase-invoices - **downstream name:** Purchase Invoices - **id:** bills - **name:** Bills - **status:** live - **custom field support:** true - **downstream id:** incoming-payments - **downstream name:** Incoming Payments - **id:** payments - **name:** Payments - **status:** live - **custom field support:** true - **downstream id:** chart-of-accounts - **downstream name:** Chart Of Accounts - **id:** ledger-accounts - **name:** Ledger Accounts - **status:** live - **custom field support:** true - **downstream id:** sales-tax-codes - **downstream name:** Sales Tax Codes - **id:** tax-rates - **name:** Tax Rates - **status:** live - **custom field support:** true - **downstream id:** journal-entries - **downstream name:** Journal Entries - **id:** journal-entries - **name:** Journal Entries - **status:** live - **custom field support:** false - **downstream id:** items - **downstream name:** Items - **id:** invoice-items - **name:** Invoice Items - **status:** live - **custom field support:** true - **downstream id:** credit-notes - **downstream name:** Credit Notes - **id:** credit-notes - **name:** Credit Notes - **status:** live - **custom field support:** true - **downstream id:** purchase-orders - **downstream name:** Purchase Orders - **id:** purchase-orders - **name:** Purchase Orders - **status:** live - **custom field support:** true - **downstream id:** quotes - **downstream name:** Quotes - **id:** quotes - **name:** Quotes - **status:** beta - **custom field support:** false - **downstream id:** tracking-categories - **downstream name:** Tracking Categories - **id:** tracking-categories - **name:** Tracking Categories - **status:** live - **custom field support:** false - **downstream id:** expense-categories - **downstream name:** Expense Categories - **id:** expense-categories - **name:** Expense Categories - **status:** beta - **custom field support:** true - **downstream id:** bill-payments - **downstream name:** Bill Payments - **id:** bill-payments - **name:** Bill Payments - **status:** live - **custom field support:** false - **downstream id:** bank-accounts - **downstream name:** Bank Accounts - **id:** bank-accounts - **name:** Bank Accounts - **status:** beta - **custom field support:** false - **downstream id:** departments - **downstream name:** Departments - **id:** departments - **name:** Departments - **status:** live - **custom field support:** false - **downstream id:** employees - **downstream name:** Employees - **id:** employees - **name:** Employees - **status:** beta - **custom field support:** true - **downstream id:** orders - **downstream name:** Orders - **id:** sales-orders - **name:** Sales Orders - **status:** beta - **custom field support:** false - **downstream id:** attachments - **downstream name:** Attachments - **id:** attachments - **name:** Attachments - **status:** live An omitted operation list does not establish operation support. Verify the selected operation in the coverage matrix. [API reference](https://developers.apideck.com/apis/accounting/reference.md) · [Coverage matrix](https://developers.apideck.com/apis/accounting/coverage)