field to a table & Enhancements procedure

[Former Member]

Hi All,

can u explain me in detail how to add a particular field to a table in R/3.& also the enhancements for the data in a particular field.

Best Regards,

Sateesh.

[Former Member]

Hi,

You can use APPEND structures to add a field to a standard sap table..

Please check the following link for detail

http://help.sap.com/saphelp_nw04/helpdata/en/cf/21ebc9446011d189700000e8322d00/content.htm

Thanks

Naren

[Former Member]

HI

<b>ABAP DICTIONARY</b>

<b>Table Enhancements</b>: There are two ways that you can add additional fields to tables without modifying your system.

<b>Append Structures</b>:

Append structures allow you to enhance tables by adding fields to them that are not part of the standard. With append structures, customers can add their own fields to any table or structure they want.

Append structures are created for use with a specific table. However, a table can have multiple append structures assigned to it.

<b>Customizing Includes</b>:

If customers know in advance that one of the tables or structures delivered to them by SAP needs to have customer-specific fields added to it, an SAP application developer can include these fields in the table using a Customizing include statement.

The same Customizing include can be used in multiple tables or structures. This provides for consistency in these tables and structures whenever the itself include is altered.

Append structures allow you to attach fields to a table without actually having to modify the table itself.

Append structures may only be assigned to a single table. A table may, however, have several append structures attached to it. Whenever a table is activated, the system searches for all active append structures for that table and attaches them to the table. If an append structure is created or changed and then activated, the table it is assigned to is also activated, and all of the changes made to the append structure take effect in the table as well.

You can use append structures in ABAP programs just as you would any other structure.

Note: When you copy tables that have append structures attached to them, the fields that were found in the append structure of the original table become part of the actual body of the target table.

Some of the tables and structures delivered with the R/3 standard contain special include statements calling Customizing includes. These are often inserted in those standard tables that need to have customer-specific fields added to them.

In contrast to append structures, Customizing includes can be inserted into more than one table. This provides for data consistency throughout the tables and structures affected whenever the include is altered.

Customizing include programs are part of the customer namespace: all of their names begin with 'CI_'. This naming convention guarantees that nonexistent Customizing includes do not lead to errors. No code for Customizing includes is delivered with the R/3 standard.

You create Customizing includes using special Customizing transactions. Some are already part of SAP enhancements and can be created by using project management (see the unit on 'Enhancements using Customer Exits').

The Customizing include field names must lie in the customer namespace just like field names in append structures. These names must all begin with either 'YY' or 'ZZ'.

When adding the fields of a Customizing include to your database, adhere to same rules you would with append structures.

<b>Field Exits:</b>

Field exits take you from a screen field with a data element reference to a function module. Field exits can be either global or local.

Field exit function modules adhere to the following naming convention:

prefix: FIELD_EXIT_

name: <data element name>_

suffix (optional): 0 to 9, A to Z

Global field exits are not limited to a particular screen. If a global field exit's data element is used on multiple screens, you will branch to a function module from all of these screens once the exit has been activated. Here you can, for example, edit the contents, force a new entry to be made by outputting an error message, or prohibit certain users from proceeding further.

Local field exits are valid for one screen only. If you assign a screen from a specific program to the data element, then you will only branch to a function module from this screen once the exit has been activated. To be able to allow different functionality on different screens referring to the same data element, you can assign exit numbers to data elements. Each exit number refers to a different function module.

prefix: FIELD_EXIT_

name: <data element name>_

suffix (optional): 0 to 9, A to Z

<b>Text Enhancements:</b>

Possible text enhancements include customer keywords and customer documentation of data elements.

Text enhancements differ from other application enhancements in that they take effect globally in all related SAP applications after activation (global enhancements).

Possible text enhancements include customer keywords and customer documentation of data elements.

Text enhancements differ from other application enhancements in that they take effect globally in all related SAP applications after activation (global enhancements).

Use the project management function to edit text enhancements.

Just as with field exits, use the menu entry Global enhancements to access the enhancement functions for keywords and data element documentation

SAP application programmers define keywords in different lengths and a short description for each data element. Use the project management function (transaction CMOD) to change these keywords and short texts.

All screen fields that use the keyword text of data elements can be renamed in this manner.

A new short text in a data element will show up in the F1 help of the screen field.

In order for keyword changes to take effect on a screen, SAP application programmers have to maintain the MOD attribute (keyword modification indicator) of the affected field accordingly in the Screen Painter field list.

The MOD attribute must have one of the following values:

SPACE: the keyword that best fits the field length 1: short keyword 2: medium keyword 3: long keyword 4: keyword for header V: variable text transfer from the ABAP Dictionary F: fixed, no text transfer

If the attribute contains an 'F', it is fixed on the screen and cannot be modified. In all other cases, screens that refer to that particular data element will show the changed keyword.

<b>Reward if usefull</b>