| Code | Display | Definition | deprecated |
| CONFIRM | Contact the Placer Contact Person prior to making any substitutions of this resource | Contact the Placer Contact Person prior to making any substitutions of this resource | 2.9 |
| NO | Substitution of this resource is not allowed | Substitution of this resource is not allowed | 2.9 |
| NOTIFY | Notify the Placer Contact Person, through normal institutional procedures, that a substitution of this resource has been made | Notify the Placer Contact Person, through normal institutional procedures, that a substitution of this resource has been made | 2.9 |
| YES | Substitution of this resource is allowed | Substitution of this resource is allowed | 2.9 |
| No | Substitution of this resource is not allowed | Substitution of this resource is not allowed | |
| Confirm | Contact the Placer Contact Person prior to making any substitutions of this resource | Contact the Placer Contact Person prior to making any substitutions of this resource | |
| Notify | Notify the Placer Contact Person, through normal institutional procedures, that a substitution of this resource has been made | Notify the Placer Contact Person, through normal institutional procedures, that a substitution of this resource has been made | |
| Yes | Substitution of this resource is allowed | Substitution of this resource is allowed | |