Adaptation Using Field Control
You can adapt the attributes for individual fields and thus display them as required entry fields or in display mode. You can either specify the field attributes statically or determine them dynamically depending on certain conditions. A condition could be, for example, that another field has a specific value.
Integration
Field control is available for the applications for processing issues and activities. As field control directly affects the BOPF node, no influence on the interface is necessary using context-based adaptations (CBAs) of the Web Dynpro applications.
Features
In field control, there is a distinction between modifiable and influencing fields. The modifiable fields are visible on the user interface and can be influenced by field control. Control is exercised by the influencing fields, which do not necessarily have to be visible on the user interface. For each modifiable field, you can specify which influencing fields have control.
If you have defined your own fields in the customer namespace, you can also include these as modifiable or influencing fields in field control.
Activities
For information about how you set up field control, see Customizing for QIM under 
Environment
Define Field Control
.