Classic Enhancement Types

Classic Enhancement Types

1. WHERE TO USE

   • In ABAP programs by using function module exists
   • On GUIs by using menu exits
   • On screens, by using screen exits to insert a subscreen in an area that SAP specifies
   • On screens, by using field exits to process the costumer code that refers to a specific field on the screen
   • In ABAP Dictionary tables or structures by using table enhancements

2. TYPES

   • Table enhancements
     • Append structures
       • Structure is assign to exactly one table. Can be several append structures for a table. Allow you to attach fields to a table without actually modifying the table.
         • ATTENTION: SAP tables may be classified to prevent issues. you cannot create append structures for pool and clusters tables. if a table has a long field you cannot use. if you use to expand a SAP table the name fields mast use a customer namespace,, starting by YY or ZZ.
     • Customizing Includes (CI)
       • you need to add .INCLUDE. allow you to use the same structure in multiple tables. SAP developers need to plan table enhancements using CI.
         • ATTENTION: The customer namespace starts with CL_ for ensure not to lead to errors. you also need to respect da name of the fields using a customer namespace starting by YY or ZZ
   • Program enhancements
     • SUBROUTINE
       • User exit
         • A user exit is a subroutine
     • FUNCTION MODULE
       • Customer exit
         • A special exit function module that the SAP application program calls. this function module is part of a function group that the systems handles in a special manner.
       • Business Transaction Event
         • The SAP application program dynamically call a function module in the customer namespace.
     • METHOD
       • Business Add-in
         • The application program calls a method of a class or instance of a class. this class lies in the customer namespace.
   • Menu enhancements
     • Customer exits or Business Add-Ins
       • Add additional menu options to a SAP standard menu
   • Screen enhancements
     • Customer exits
       • Define subscreen areas. specify the corresponding calls in the flow logic. provide the framework for the data transport. include the screen exit in a enhancement. Maintain documentation.

3. ·

   • Enhancement Texts and Data Elements
     • you can overwrite the fields label text with customer-specific texts
       • SPACE - Field label that bests fits the field length
       • 1-short Field label 2-medium field label 3-long field label 4-field label for header
       • V- Variable text transfer from the dictionary (as SPACE)
       • F- Fixed (no text transfer from the dictionary)
       • In new releases you need to restore