T-code: BUPT
Business Data Toolset is a central tool for maintaining master data and simple transaction data.
The Business data toolset is a central control tool for maintaining SAP dialog programs. It is called as BDT in short. If an application transaction is BDT enabled, we can add new custom fields, hide standard fields, move standard fields from one screen to another, add new menu options, and add custom validations all without modifying the underlying transaction.
BDT is used at SAP for maintaining application transaction. Now SAP extended this tool for use by development partners and customers.
Advantages
Business data toolset originated from the business partner project. The demands of more extensibility, configurability and divisibility required for data entry screens gave birth to the Business data toolset.