| ERROR | duplicate or invalid event name in equal specification |
| CAUSE | An attempt was made to specify a duplicate or invalid primitive event for the rule classs equal property. |
| ACTION | Correct the input and try again. |
| ERROR | duplicate or invalid event name in equal specification |
| CAUSE | An attempt was made to specify a duplicate or invalid primitive event for the rule classs equal property. |
| ACTION | Correct the input and try again. |