The SAP tcode SHDB is used for:
Transaction Recorder (SAP Recording Tool)
SHDB allows you to record SAP transactions step-by-step. This is mainly used to:
Create BAPIs, Batch Input Sessions, or LSMW projects
Automate data entry for repetitive tasks
Understand the structure of transaction screens and field mappings
You can:
Record a transaction (e.g., VA01, ME21N)
View the fields and table structure used
Generate a program for mass data uploads or automation