Use this to determine whether or not CICS processing should prefix the resource names when making security queries. 
| Setting  | 
Result  | 
| NO  | 
No prefixes are used  | 
| YES  | 
Resource names are prefixed with the CICS region user ID.  | 
| prefix  | 
This string will be used as the prefix for resource names. It can be 1 to 8 upper case alphanumeric characters and it must start with an alphabetic character.  |