There are two ways: the Include and Append
1.INCLUDE standards are generally reserved for enhancement: to enhance the production order CO01 field, for example
INCLUDE in Table AUFK structural "CI_AUFK" Add custom field
Save and activate;
INCLUDE structure CI_AUFK, built to enhance and activate the field
Encounter problems: partially activated
Because the field ZTRIAL has been in existence, can not lead to repeated activation
And then found that the standard INCLUDE: This standard CI_AUFK include .INCLUDE INCL_EEW_AUFK_PS to go, you do not have this structure alone INCLUDE
After activation, AUFK View:
2.APPEND generally used self table, additional fields;
E.g:
It can be a table or structure to increase their own field by append structure,. Append structure can be used like any other of the same general structure.
note:
1: Pool and Cluster Structure table can not use the append
2: If there is a table or long field such LCHAR LRAW, can not use append structure. This is because the field must be in the long end of the table.
3: append structure can only be used for a table, a table can have multiple Structure the append
4: Append Structure of the field name must be in the customer namespace, they must begin with ZZ or YY
Customizing Include: If you know in advance the table need to increase the customer's own field, sap developers can Customizing include statements included these fields.
Customizing include可以用于多个表或structure。不存在的customizing include不会导致错误