To define an SSA

From the tree view or the segment information window, double-click the segment type for which you want to define an SSA.
Do one of the following:
To define an unqualified SSA
1. Select Unqualified SSA for segment-type, where segment-type is the selected segment type.
2. If the segment does not have a unique key defined, select a code other than Null from the Command Code drop-down list.
To define a qualified SSA
1. Select Qualified SSA; then click Define.
2. If the segment does not have a unique key defined, select a code other than Null from the Command Code drop-down list.
3. Use the fields and controls in the Define qualifier section to build a list of qualifications on the Qualification list. See Qualifications for segment dialog box for a description of each field and control.
  Note: If you are using Boolean operators, the last qualification statement on the Qualification list must be blank.
4. Click OK.
Click OK.

Note:

The IMS Database Editor supports SSAs for up to 10 databases.
The IMS Database Editor does not support command codes for segments with unique keys defined. Therefore, for such segments, command codes are disabled.