Hi Sreenivas
The tcode can be created for four types of programs. As shown in below screen.
For what type of program you want to create?
In general,
Go to SE93
Provide Ztoce as you wish... ZABCD
Provide description for the tcode
Associate the program Id to it based on above type
1. radio button first - generally for module programs
2. radio button second - generally for report programs with parameter input screen
etc..
Regards,
Venkat