The variables listed below can be used to override the default CICS resource classes.
| Environment variable | Default class | Possible values | Prefix letter if a name is specified + 7 letters of the name | 
|---|---|---|---|
| ES_CLASS_XPCT | ACICSPCT | YES/NO/NAME | A | 
| ES_CLASS_XCMD | CCICSCMD | YES/NO/NAME | C | 
| ES_CLASS_XDCT | DCICSDCT | YES/NO/NAME | D | 
| ES_CLASS_XFCT | FCICSFCT | YES/NO/NAME | F | 
| ES_CLASS_XJCT | JCICSJCT | YES/NO/NAME | J | 
| ES_CLASS_XPPT | MCICSPPT | YES/NO/NAME | M | 
| ES_CLASS_XPSB | PCICSPSB | YES/NO/NAME | P | 
| ES_CLASS_XRES | RCICSRES | YES/NO/NAME | R | 
| ES_CLASS_XTST | SCICSTST | YES/NO/NAME | S | 
| ES_CLASS_XTRAN | TCICSTRN | YES/NO/NAME | T | 
For instance if you set ES_CLASS_XTRAN to the value MYTRANS then CICS will look for TMYTRANS as the class.