Include structure and Append structure

 Include structure and Append structure

Include structure 

• Include structure allows to add one or more structure into structure or table. Also placed positioning anywhere.  Up to 6 include structure can be used in a table.
• we can use include structure to many table. Structure is reusable.
• only preexisting  include structure in standard table can be modify.

Append Structure

• Append structure can be placed only at the end of a structure or table which also stops further insertion of fields. Only one append structure can be used.
• we can use append structure to exactly one table.  Not reusable for other table.
• append structure is used to add additional fields in standard sap tables.
• The name of a append structure can begin with ZZ* / YY* .