PA30 transaction is a transaction in which you are updating a employee data by way of Infotype (different areas) in HR.
PA30 is HR Master Data Maintenance .
Enter any existing personnel number (for example 1000). In the Infotype field, enter the number of your infotype (95##) or any standard existing infotype and choose Create. Create any data you like, save it, and test the various functions in HR Master Data Maintenance, for example Change, Copy, Delimit, Delete...