Using the Search Help for Personnel Numbers 
Use
Search help for personnel numbers enables you to access personnel numbers even if you do not know them. There are many types of search help available for the field Personnel number. You access them by calling up the input help. Select the type of search help you want (e.g. Last name - First name) and enter the corresponding data. The system selects the personnel data according to the information you have entered, and produces a list. You can then select the employee you require from this list. The system then writes the selected person's personnel number in the field Personnel number.
Prerequisites
Search help is available under the standard settings. You can use these types of search help or you can add to them to meet your company's requirements.
To find out how you define search help, see Personnel Administration ®
Basic Settings ® Maintain Search Help in the Implementation Guide (IMG).Features
When you have the possibility to call up search help for personnel numbers it is bound to the relevant transaction that you are currently in. Some transactions are delivered in the standard system with the search help functionality. As a rule, there are fewer search helps in HR master data maintenance than in a report transaction.
The following search help types are set up for HR master data maintenance in the standard system:
The following additional search help types are set up for reporting in the standard system:

For more detailed information about search help, see the Basis documentation under
Search Help.
See also:
Using the Search Help for Payroll Correction Run Using the Search Help for PDC Error Indicator Execute Search Help for Personnel Numbers