--- title: "Connect SAP Business One to Hypamoon" description: "SAP Business One has an open API. See what you can build with it in Hypamoon, how it signs in, and the sources we checked." url: https://hypamoon.com/connect-to/sap-business-one --- 1. [Connect to](https://hypamoon.com/connect-to) 2. SAP Business One ERP and accounting # Connect SAP Business One to Hypamoon Yes. SAP Business One has a public, versioned API and you create the key yourself, so your chat can write the adapter. Open ## The check Three questions about the API of SAP Business One, answered from its own docs. **Public API docs**\ **Yes.** [Read the docs](https://help.sap.com/doc/056f69366b5345a386bb8149f1700c19/10.0/en-US/Service%20Layer%20API%20Reference.html) **A key you create yourself**\ **Yes.** You log in to the Service Layer with an SAP Business One user, company database and password. [help.sap.com](https://help.sap.com/doc/fc2f5477516c404c8bf9ad1315a17238/10.0/en-US/Working_with_SAP_Business_One_Service_Layer.pdf) **Versions or a changelog**\ **Yes.** OData v3 (/b1s/v1) and v4 (/b1s/v2); v3 is deprecated since FP 2405. [help.sap.com](https://help.sap.com/doc/056f69366b5345a386bb8149f1700c19/10.0/en-US/Service%20Layer%20API%20Reference.html) **How it signs in**\ POST to /Login with company database, user name and password; you get a B1SESSION cookie that you send with each request until it times out. **Webhooks**\ **Not confirmed.** **Hosting**\ Self-hosted ## In practice What it takes in a real SAP Business One administration. **Getting access**\ Your SAP partner or IT administrator makes the Service Layer reachable over HTTPS and creates an SAP Business One user for the integration; the integration logs in with company database, user name and password. **Limits**\ None published. **Writing**\ **Read and write.** Standard create, read and update on entities such as business partners, sales orders, invoices and items, plus document actions. **Cost**\ SAP says a technical integration user needs an Indirect Access licence (user based or for non employees); check the exact licence with your partner. [learning.sap.com](https://learning.sap.com/courses/building-side-by-side-fiori-applications-with-sap-btp/setting-up-an-sap-btp-destination-for-service-laye) ## What you can build A web order form or customer portal that puts sales orders and new business partners straight into SAP Business One, and a chat check on stock per item. Your chat writes it as a Hypamoon adapter from the docs above. Reading starts after you click Allow in the portal, and every write waits for your approval, one call at a time. [How adapters work](https://hypamoon.com/docs/adapters) ### Good to know - Your adapter uses a fixed key: you paste it once in the Hypamoon portal, never in the chat, and it only goes to the API host you allow. - The Service Layer runs on your own SAP Business One server or at your hosting partner. It must be reachable from the internet over HTTPS, and the available endpoints depend on your version and feature pack. ## Try it in your chat Fill in what to read and write, and send it. Say this in your chat > Build the Hypamoon recipe build-an-adapter for SAP Business One. API docs: https://help.sap.com/doc/056f69366b5345a386bb8149f1700c19/10.0/en-US/Service%20Layer%20API%20Reference.html. Read: \[what\]. Write: \[what, or nothing\]. [Open in Claude](https://claude.ai/new?q=Build%20the%20Hypamoon%20recipe%20build-an-adapter%20for%20SAP%20Business%20One.%20API%20docs%3A%20https%3A%2F%2Fhelp.sap.com%2Fdoc%2F056f69366b5345a386bb8149f1700c19%2F10.0%2Fen-US%2FService%2520Layer%2520API%2520Reference.html.%20Read%3A%20%5Bwhat%5D.%20Write%3A%20%5Bwhat%2C%20or%20nothing%5D.) In Claude, or another chat with the full Hypamoon connection; adapters are not in ChatGPT yet. You paste the key in the portal, never in the chat. [The full recipe](https://hypamoon.com/r/build-an-adapter) ## Sources Checked on 1 November 2026. - [help.sap.com/doc/056f69366b5345a386bb8149f1700c19/10.0/en-US/Service%20Layer%20API%20Reference.html](https://help.sap.com/doc/056f69366b5345a386bb8149f1700c19/10.0/en-US/Service%20Layer%20API%20Reference.html) - [help.sap.com/doc/fc2f5477516c404c8bf9ad1315a17238/10.0/en-US/Working\_with\_SAP\_Business\_One\_Service\_Layer.pdf](https://help.sap.com/doc/fc2f5477516c404c8bf9ad1315a17238/10.0/en-US/Working_with_SAP_Business_One_Service_Layer.pdf) - [learning.sap.com/courses/building-side-by-side-fiori-applications-with-sap-btp/setting-up-an-sap-btp-destination-for-service-laye](https://learning.sap.com/courses/building-side-by-side-fiori-applications-with-sap-btp/setting-up-an-sap-btp-destination-for-service-laye) SAP Business One is a name of its owner, used here only to describe the software. This page is not an official integration and Hypamoon has no partnership with SAP Business One. Found something that changed? Tell us at [support](https://hypamoon.com/support#contact). ## More in erp and accounting - [**Acumatica** Open](https://hypamoon.com/connect-to/acumatica) - [**AFAS Profit** Open](https://hypamoon.com/connect-to/afas-profit) - [**DATEV** Possible](https://hypamoon.com/connect-to/datev) - [**e-Boekhouden.nl** Open](https://hypamoon.com/connect-to/e-boekhouden) - [**Exact for Accountancy** Open](https://hypamoon.com/connect-to/exact-for-accountancy) - [**Exact Globe+** Possible](https://hypamoon.com/connect-to/exact-globe) - [**Exact Gripp** Possible](https://hypamoon.com/connect-to/exact-gripp) - [**Exact Multivers** Possible](https://hypamoon.com/connect-to/unit4-multivers) - [**Exact Online** Open](https://hypamoon.com/connect-to/exact-online) - [**FreshBooks** Open](https://hypamoon.com/connect-to/freshbooks) - [**Holded** Open](https://hypamoon.com/connect-to/holded) - [**Isah** Unknown](https://hypamoon.com/connect-to/isah) - [**Jortt** Open](https://hypamoon.com/connect-to/jortt) - [**KING Finance** Possible](https://hypamoon.com/connect-to/king-finance) - [**Lexware Office (lexoffice)** Open](https://hypamoon.com/connect-to/lexoffice) - [**Microsoft Dynamics 365 Business Central** Open](https://hypamoon.com/connect-to/dynamics-365-business-central) - [**Microsoft Dynamics 365 Finance and Operations** Open](https://hypamoon.com/connect-to/dynamics-365-finance-operations) - [**Microsoft Dynamics NAV** Open](https://hypamoon.com/connect-to/dynamics-nav) - [**Moneybird** Open](https://hypamoon.com/connect-to/moneybird) - [**Odoo** Open](https://hypamoon.com/connect-to/odoo) - [**Oracle NetSuite** Open](https://hypamoon.com/connect-to/oracle-netsuite) - [**Pennylane** Open](https://hypamoon.com/connect-to/pennylane) - [**QuickBooks Online** Open](https://hypamoon.com/connect-to/quickbooks-online) - [**Ridder iQ** Unknown](https://hypamoon.com/connect-to/ridder-iq) - [**Sage Accounting (Sage Business Cloud)** Unknown](https://hypamoon.com/connect-to/sage-accounting) - [**Sage Intacct** Possible](https://hypamoon.com/connect-to/sage-intacct) - [**SAP S/4HANA** Open](https://hypamoon.com/connect-to/sap-s4hana) - [**sevDesk** Open](https://hypamoon.com/connect-to/sevdesk) - [**Simplicate** Open](https://hypamoon.com/connect-to/simplicate) - [**SnelStart** Possible](https://hypamoon.com/connect-to/snelstart) - [**Syntess Atrium** Closed](https://hypamoon.com/connect-to/syntess-atrium) - [**Twinfield** Possible](https://hypamoon.com/connect-to/twinfield) - [**Unit4 ERPx** Possible](https://hypamoon.com/connect-to/unit4-erpx) - [**Visma eAccounting** Possible](https://hypamoon.com/connect-to/visma-eaccounting) - [**Visma.net ERP** Possible](https://hypamoon.com/connect-to/visma-net-erp) - [**Wave** Possible](https://hypamoon.com/connect-to/wave) - [**Xero** Open](https://hypamoon.com/connect-to/xero) - [**Yuki (Nmbrs Accounting)** Unknown](https://hypamoon.com/connect-to/yuki) - [**Zoho Books** Open](https://hypamoon.com/connect-to/zoho-books) - [**BILL (Bill.com)** Open](https://hypamoon.com/connect-to/bill) - [**Brex** Open](https://hypamoon.com/connect-to/brex) - [**Expensify** Possible](https://hypamoon.com/connect-to/expensify) - [**Pleo** Possible](https://hypamoon.com/connect-to/pleo) - [**Ramp** Open](https://hypamoon.com/connect-to/ramp) [All 267 tools](https://hypamoon.com/connect-to) ## Tool not listed? Ask the chat to check its API. The same three checks work for any software. Your chat reads the vendor's own docs and tells you what it found. Say this in your chat > Check if \[software\] has an open API that a Hypamoon adapter can use: public API docs, a key or token I can create myself without asking the vendor, and versions or a changelog. Link the pages you used. [Open in Claude](https://claude.ai/new?q=Check%20if%20%5Bsoftware%5D%20has%20an%20open%20API%20that%20a%20Hypamoon%20adapter%20can%20use%3A%20public%20API%20docs%2C%20a%20key%20or%20token%20I%20can%20create%20myself%20without%20asking%20the%20vendor%2C%20and%20versions%20or%20a%20changelog.%20Link%20the%20pages%20you%20used.) [Open in ChatGPT](https://chatgpt.com/?q=Check%20if%20%5Bsoftware%5D%20has%20an%20open%20API%20that%20a%20Hypamoon%20adapter%20can%20use%3A%20public%20API%20docs%2C%20a%20key%20or%20token%20I%20can%20create%20myself%20without%20asking%20the%20vendor%2C%20and%20versions%20or%20a%20changelog.%20Link%20the%20pages%20you%20used.) Fill in the name of your software. Checking needs no connection to Hypamoon. ## Ready to connect SAP Business One? Connect your chat once, then ask it to build the adapter. [Start free](https://app.hypamoon.com/?mode=signup&utm_source=connect-to&utm_campaign=sap-business-one) Works in Claude and ChatGPT. [Add to Claude](https://hypamoon.com/connect?via=connect-to~sap-business-one#claude) [Add to ChatGPT](https://hypamoon.com/connect?via=connect-to~sap-business-one#chatgpt)