| Code | Description | Version |
| CONFIRM | Contact the Placer Contact Person prior to making any substitutions of this resource | added v2.3, removed after v2.3 |
| Confirm | Contact the Placer Contact Person prior to making any substitutions of this resource | added v2.3.1 |
| NO | Substitution of this resource is not allowed | added v2.3, removed after v2.3 |
| NOTIFY | Notify the Placer Contact Person, through normal institutional procedures, that a substitution of this resource has been made | added v2.3, removed after v2.3 |
| No | Substitution of this resource is not allowed | added v2.3.1 |
| Notify | Notify the Placer Contact Person, through normal institutional procedures, that a substitution of this resource has been made | added v2.3.1 |
| YES | Substitution of this resource is allowed | added v2.3, removed after v2.3 |
| Yes | Substitution of this resource is allowed | added v2.3.1 |