Contract One Enhances Contract Period Management Function
Sansan has updated its contract management service 'Contract One' to automatically reflect contract period changes from child contracts (like memorandums) onto the parent contract database and alert systems, utilizing advanced NLP.
📋 Article Processing Timeline
- 📰 Published: April 15, 2026 at 20:00
- 🔍 Collected: April 15, 2026 at 11:31
- 🤖 AI Analyzed: April 19, 2026 at 10:23 (94h 51m after Collected)
Sansan Inc., which provides AX services that change the way we work, has enhanced the contract period management function in its transaction management service 'Contract One'.
With this update, when a contract period is changed or canceled by an additional contract such as a memorandum, the latest period and contract status will be automatically reflected in the original contract's information. Consequently, the delivery date of the alert email notifying the contract end date is also automatically updated, enabling users to effortlessly manage contracts based on an always-accurate contract period.
■ Background of the Provision
When changing the contract period stipulated in a contract, the original contract cannot be modified directly; instead, a new contract such as a 'memorandum' is concluded to change the period. Therefore, to accurately grasp the contract period, it is necessary to manage multiple contracts together: the original contract (parent contract), such as a basic agreement, and the contract stipulating the changes (child contract). As a result, verifying the contract period is time-consuming, and there was a risk of accidentally renewing a contract due to missed checks or unintentionally rendering a contract invalid. In fact, our own survey revealed that many people have experienced misunderstandings because they failed to grasp the changes in contract details (*1).
We developed this feature to solve these issues and enable accurate management of contract periods.
■ Overview of the New Feature
Contract One digitizes contract information such as contract end dates, presence of automatic renewals, and renewal periods, automatically classifying and displaying the status of each contract as 'Active', 'Terminated', etc. (*2). It also features a function to send an alert email to the person in charge notifying them of the contract end date.
With this update, when concluding a child contract like a memorandum to change or cancel the contract period, the details will automatically be reflected in the parent contract's status and alerts. Users can manage contracts based on the latest contract details at all times without having to manually update the information.
This feature was realized through joint development with our group company, Language Understanding Institute Co., Ltd., which has been researching and developing natural language processing for over 40 years, and a patent is currently pending.
*1: Sansan Inc. 'Fact-finding Survey on Proper Contract Execution' (Announced on July 30, 2025)
https://jp.corp-sansan.com/news/2025/0730.html
*2: Two new features added to the contract database 'Contract One'. Realizing comprehensive contract management through AI and language understanding research technology (Announced on March 25, 2024)
https://jp.corp-sansan.com/news/2024/0325.html
(End)
■ 'Contract One', the AI Contract Database that Protects Profits
Contract One is a transaction management service provided by Sansan Inc. It centralizes transaction documents including contracts, regardless of format (paper or electronic). Combining proprietary AI and operator correction, it accurately extracts data and automatically links the relationships between transaction documents. By building a database that allows a comprehensive view of the overall picture and evolution of transactions, it supports business decisions that prevent lost opportunities and loss of credibility, thereby protecting corporate profits.
https://contract-one.com/
■ Sansan Inc. Company Overview
Under the mission of 'Turning encounters into innovation', we provide AX services that change the way people work. Our main services include the business database 'Sansan', the business card app 'Eight', the accounting AX service 'Bill One', the transaction management service 'Contract One', and the data quality management 'Sansan Data Intelligence', provided both domestically and internationally.
Established: June 11, 2007
URL: https://jp.corp-sansan.com/
Location: 28F Shibuya Sakura Stage, 1-1 Sakuragaoka-cho, Shibuya-ku, Tokyo 150-6228
Capital: 7,350 million yen (As of February 28, 2026)
Business details: Planning, development, and sales of AX services that change the way people work
Sansan https://jp.sansan.com/
Eight https://8card.net/
Bill One https://bill-one.
With this update, when a contract period is changed or canceled by an additional contract such as a memorandum, the latest period and contract status will be automatically reflected in the original contract's information. Consequently, the delivery date of the alert email notifying the contract end date is also automatically updated, enabling users to effortlessly manage contracts based on an always-accurate contract period.
■ Background of the Provision
When changing the contract period stipulated in a contract, the original contract cannot be modified directly; instead, a new contract such as a 'memorandum' is concluded to change the period. Therefore, to accurately grasp the contract period, it is necessary to manage multiple contracts together: the original contract (parent contract), such as a basic agreement, and the contract stipulating the changes (child contract). As a result, verifying the contract period is time-consuming, and there was a risk of accidentally renewing a contract due to missed checks or unintentionally rendering a contract invalid. In fact, our own survey revealed that many people have experienced misunderstandings because they failed to grasp the changes in contract details (*1).
We developed this feature to solve these issues and enable accurate management of contract periods.
■ Overview of the New Feature
Contract One digitizes contract information such as contract end dates, presence of automatic renewals, and renewal periods, automatically classifying and displaying the status of each contract as 'Active', 'Terminated', etc. (*2). It also features a function to send an alert email to the person in charge notifying them of the contract end date.
With this update, when concluding a child contract like a memorandum to change or cancel the contract period, the details will automatically be reflected in the parent contract's status and alerts. Users can manage contracts based on the latest contract details at all times without having to manually update the information.
This feature was realized through joint development with our group company, Language Understanding Institute Co., Ltd., which has been researching and developing natural language processing for over 40 years, and a patent is currently pending.
*1: Sansan Inc. 'Fact-finding Survey on Proper Contract Execution' (Announced on July 30, 2025)
https://jp.corp-sansan.com/news/2025/0730.html
*2: Two new features added to the contract database 'Contract One'. Realizing comprehensive contract management through AI and language understanding research technology (Announced on March 25, 2024)
https://jp.corp-sansan.com/news/2024/0325.html
(End)
■ 'Contract One', the AI Contract Database that Protects Profits
Contract One is a transaction management service provided by Sansan Inc. It centralizes transaction documents including contracts, regardless of format (paper or electronic). Combining proprietary AI and operator correction, it accurately extracts data and automatically links the relationships between transaction documents. By building a database that allows a comprehensive view of the overall picture and evolution of transactions, it supports business decisions that prevent lost opportunities and loss of credibility, thereby protecting corporate profits.
https://contract-one.com/
■ Sansan Inc. Company Overview
Under the mission of 'Turning encounters into innovation', we provide AX services that change the way people work. Our main services include the business database 'Sansan', the business card app 'Eight', the accounting AX service 'Bill One', the transaction management service 'Contract One', and the data quality management 'Sansan Data Intelligence', provided both domestically and internationally.
Established: June 11, 2007
URL: https://jp.corp-sansan.com/
Location: 28F Shibuya Sakura Stage, 1-1 Sakuragaoka-cho, Shibuya-ku, Tokyo 150-6228
Capital: 7,350 million yen (As of February 28, 2026)
Business details: Planning, development, and sales of AX services that change the way people work
Sansan https://jp.sansan.com/
Eight https://8card.net/
Bill One https://bill-one.