DDIC Table creation : Top down method Step by Step Procedure.
Go to Tcode se11 and create table.
In Delivery and Maintenance Tab Give Delivery Class and Maintenance.
In Fields Tab Create Fields.
Create New Data element for the field by double clicking on the DE Name.
Create New Domain for the field by double clicking on the Domain Name.
Select Data Type and No of Characters for the field as shown below.
After Selection Activate the Domain and Data Element as shown below.
After Field creation Give Technical Settings for the table as shown below.
Save the Technical Settings and return back to fields.
Now after Technical Settings Activate the Table.
Create Entries for the Table as shown below.