Specifying an ADD

Specify an ADD_ operation in the upgrade file for any existing entry that pertains to the ADD type of entry in the installation file. When you specify an ADD_ operation, the following steps are performed:

A search is made of the installation file for any existing entries that conflict with the entry you want to add.
A conflict arises when another entry is found with the same unique values (for example, DDNAME is the unique value for *LIBRARY entries). For entry types that can occur only once (for example, *INIT_COMMAND or any required entry), no unique values exist because the entry itself is unique. If a conflict arises, message lines stating that a duplicate entry was found are added after the lines where the conflicting entry resides. The entry intended to be added is inserted (as comments) into the installation file after the message lines.
The following example shows lines that appear when an *ADD_LIBRARY conflict is encountered:
```
000120 *LIBRARY                 ISPPLIB            ISPF
000121  'ICF.FIRST.PLIB'
000122  'ICF.SECOND.PLIB'
==MSG> ADD NOT PERFORMED. DUPLICATE ENTRY FOUND. ICQAM906
000123 /* *LIBRARY             ISPPLIB             ISPF*/
000124 /* 'ICF.OTHER.PLIB'
```
If no conflict arises with existing entries, the entry is added. A note line appears preceding the added lines.
The following example shows lines that appear when the *ADD_LIBRARY operation is successful:
```
000122
=NOTE> ADD PERFORMED. THE ENTRY ADDED WAS:    ICQAM905
000123 *LIBRARY        ISPPLIB               ISPF*/
000124 'ICF.OTHER.PLIB'
```