If you happend to be one of those who forgot the transport request number of your abap program.

You can easily find it via the Versions Management.

Steps :-

Transaction SE38

Filled in your ABAP program name.

Then click Utilities -> Versions -> Version Management

SAP system will display this sample list :- 

Versions: Report source ZPROGRAM

Version Cat Fla SAP Rel. Arch Request              Date       Time     Author

Version(s) in the development database:

X activ          X  46X                                      01.08.9999 15:21:56 SAP

Version(s) in the version database:

X 00002             46X        ABCD123456      01.08.9999 15:52:43 SAP
X 00001  S    X  46X                                     00.00.0000 00:00:00

How to find deleted transport
Where To Find Deleted Transport Request Logs

SAP Basis Books
SAP System Administration, Security, Authorization, ALE, Performance Tuning Reference Books

SAP Basis Tips
SAP BC Tips - Basis Components

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